Compass | Can't compile! Zlib Buffer error

Compass | Can't compile! Zlib Buffer error - ruby

Suddenly I can't compile my compass file!
I already tried to upgrade my ruby, ruby-gems, zlib.. and nothing helps..
$ compass compile --trace
Zlib::BufError on line ["230"] of /var/lib/gems/2.0.0/gems/chunky_png-1.3.0/lib/chunky_png/chunk.rb: buffer error
/var/lib/gems/2.0.0/gems/chunky_png-1.3.0/lib/chunky_png/chunk.rb:230:in `combine_chunks'
/var/lib/gems/2.0.0/gems/chunky_png-1.3.0/lib/chunky_png/datastream.rb:148:in `imagedata'
/var/lib/gems/2.0.0/gems/chunky_png-1.3.0/lib/chunky_png/canvas/png_decoding.rb:88:in `from_datastream'
/var/lib/gems/2.0.0/gems/chunky_png-1.3.0/lib/chunky_png/image.rb:74:in `from_datastream'
/var/lib/gems/2.0.0/gems/chunky_png-1.3.0/lib/chunky_png/canvas/png_decoding.rb:53:in `from_file'
/var/lib/gems/2.0.0/gems/compass-0.12.2/lib/compass/sass_extensions/sprites/engines/chunky_png_engine.rb:15:in `block in construct_sprite'
/var/lib/gems/2.0.0/gems/compass-0.12.2/lib/compass/sass_extensions/sprites/engines/chunky_png_engine.rb:14:in `each'
/var/lib/gems/2.0.0/gems/compass-0.12.2/lib/compass/sass_extensions/sprites/engines/chunky_png_engine.rb:14:in `construct_sprite'
/var/lib/gems/2.0.0/gems/compass-0.12.2/lib/compass/sass_extensions/sprites/sprite_methods.rb:62:in `generate'
/var/lib/gems/2.0.0/gems/compass-0.12.2/lib/compass/sass_extensions/functions/sprites.rb:122:in `sprite_url'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/script/funcall.rb:113:in `_perform'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/script/node.rb:40:in `perform'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/perform.rb:298:in `visit_prop'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/base.rb:37:in `visit'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/perform.rb:100:in `visit'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/perform.rb:268:in `block (3 levels) in visit_mixin'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/perform.rb:268:in `map'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/perform.rb:268:in `block (2 levels) in visit_mixin'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/perform.rb:121:in `with_environment'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/perform.rb:268:in `block in visit_mixin'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/perform.rb:70:in `perform_arguments'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/perform.rb:263:in `visit_mixin'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/base.rb:37:in `visit'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/perform.rb:100:in `visit'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/base.rb:53:in `block in visit_children'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/base.rb:53:in `map'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/base.rb:53:in `visit_children'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/perform.rb:109:in `block in visit_children'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/perform.rb:121:in `with_environment'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/perform.rb:108:in `visit_children'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/base.rb:37:in `block in visit'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/perform.rb:320:in `visit_rule'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/base.rb:37:in `visit'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/perform.rb:100:in `visit'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/base.rb:53:in `block in visit_children'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/base.rb:53:in `map'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/base.rb:53:in `visit_children'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/perform.rb:109:in `block in visit_children'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/perform.rb:121:in `with_environment'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/perform.rb:108:in `visit_children'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/base.rb:37:in `block in visit'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/perform.rb:320:in `visit_rule'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/base.rb:37:in `visit'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/perform.rb:100:in `visit'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/base.rb:53:in `block in visit_children'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/base.rb:53:in `map'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/base.rb:53:in `visit_children'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/perform.rb:109:in `block in visit_children'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/perform.rb:121:in `with_environment'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/perform.rb:108:in `visit_children'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/base.rb:37:in `block in visit'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/perform.rb:320:in `visit_rule'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/base.rb:37:in `visit'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/perform.rb:100:in `visit'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/perform.rb:227:in `block in visit_import'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/perform.rb:227:in `map'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/perform.rb:227:in `visit_import'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/base.rb:37:in `visit'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/perform.rb:100:in `visit'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/perform.rb:227:in `block in visit_import'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/perform.rb:227:in `map'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/perform.rb:227:in `visit_import'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/base.rb:37:in `visit'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/perform.rb:100:in `visit'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/base.rb:53:in `block in visit_children'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/base.rb:53:in `map'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/base.rb:53:in `visit_children'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/perform.rb:109:in `block in visit_children'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/perform.rb:121:in `with_environment'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/perform.rb:108:in `visit_children'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/base.rb:37:in `block in visit'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/perform.rb:128:in `visit_root'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/base.rb:37:in `visit'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/perform.rb:100:in `visit'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/visitors/perform.rb:7:in `visit'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/tree/root_node.rb:20:in `render'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/engine.rb:315:in `_render'
/var/lib/gems/2.0.0/gems/sass-3.2.14/lib/sass/engine.rb:262:in `render'
/var/lib/gems/2.0.0/gems/compass-0.12.2/lib/compass/compiler.rb:140:in `block (2 levels) in compile'
/var/lib/gems/2.0.0/gems/compass-0.12.2/lib/compass/compiler.rb:126:in `timed'
/var/lib/gems/2.0.0/gems/compass-0.12.2/lib/compass/compiler.rb:139:in `block in compile'
/var/lib/gems/2.0.0/gems/compass-0.12.2/lib/compass/logger.rb:45:in `red'
/var/lib/gems/2.0.0/gems/compass-0.12.2/lib/compass/compiler.rb:138:in `compile'
/var/lib/gems/2.0.0/gems/compass-0.12.2/lib/compass/compiler.rb:118:in `compile_if_required'
/var/lib/gems/2.0.0/gems/compass-0.12.2/lib/compass/compiler.rb:103:in `block (2 levels) in run'
/var/lib/gems/2.0.0/gems/compass-0.12.2/lib/compass/compiler.rb:101:in `each'
/var/lib/gems/2.0.0/gems/compass-0.12.2/lib/compass/compiler.rb:101:in `block in run'
/var/lib/gems/2.0.0/gems/compass-0.12.2/lib/compass/compiler.rb:126:in `timed'
/var/lib/gems/2.0.0/gems/compass-0.12.2/lib/compass/compiler.rb:100:in `run'
/var/lib/gems/2.0.0/gems/compass-0.12.2/lib/compass/commands/update_project.rb:45:in `perform'
/var/lib/gems/2.0.0/gems/compass-0.12.2/lib/compass/commands/base.rb:18:in `execute'
/var/lib/gems/2.0.0/gems/compass-0.12.2/lib/compass/commands/project_base.rb:19:in `execute'
/var/lib/gems/2.0.0/gems/compass-0.12.2/lib/compass/exec/sub_command_ui.rb:43:in `perform!'
/var/lib/gems/2.0.0/gems/compass-0.12.2/lib/compass/exec/sub_command_ui.rb:15:in `run!'
/var/lib/gems/2.0.0/gems/compass-0.12.2/bin/compass:30:in `block in <top (required)>'
/var/lib/gems/2.0.0/gems/compass-0.12.2/bin/compass:44:in `call'
/var/lib/gems/2.0.0/gems/compass-0.12.2/bin/compass:44:in `<top (required)>'
/usr/local/bin/compass:23:in `load'
/usr/local/bin/compass:23:in `<main>'

Did you update your Linux?
Try the following:
sudo apt-get install zlibc zlib1g-dev zlib1g
And then update your ruby:
gem update --system

thanks, the problem was that somehow I had a non-image file in the sprites folder.

Related

Compass compilation fails when trying to import images support

I am trying to compile my scss file but forever reason it fails bigtime.
My SCSS:
#import "compass/css3/images";
#import "_fonts.scss", "_colors.scss", "_mixins.scss", "_variables.scss";
body {
background-color: $color-background-site;
}
/*------- HEADERBOX -------*/
#headerBox {
background-image: radial-gradient(circle at 49% 46%, $color-gradient-header-light, $color-gradient-header-dark);
}
It fails with
Errno::ENOENT: No such file or directory # rb_sysopen - C:/Development/Projects/SparNord.LeadGenUmbraco/SparNord.LeadGenUmbraco/development/studiepakken/.sass-cache/75fcaf1b4852ceb732871195e41567cc2a7d8997/C%058/Ruby23-x64/lib/ruby/gems/2.3.0/gems/compass-core-1.0.3/stylesheets/compass/_support.scssc20160630-9812-149m318
Backtrace:
C:/Ruby23-x64/lib/ruby/2.3.0/tempfile.rb:133:in `initialize'
C:/Ruby23-x64/lib/ruby/2.3.0/tempfile.rb:133:in `open'
C:/Ruby23-x64/lib/ruby/2.3.0/tempfile.rb:133:in `block in initialize'
C:/Ruby23-x64/lib/ruby/2.3.0/tmpdir.rb:130:in `create'
C:/Ruby23-x64/lib/ruby/2.3.0/tempfile.rb:131:in `initialize'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/util.rb:1228:in `new'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/util.rb:1228:in `atomic_create_and_write_file'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/cache_stores/filesystem.rb:39:in `_store'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/cache_stores/base.rb:51:in `store'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/cache_stores/chain.rb:19:in `block in store'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/cache_stores/chain.rb:19:in `each'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/cache_stores/chain.rb:19:in `store'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/engine.rb:417:in `_to_tree'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/engine.rb:312:in `to_tree'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:326:in `block in visit_import'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/stack.rb:88:in `block in with_import'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/stack.rb:115:in `with_frame'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/stack.rb:88:in `with_import'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:325:in `visit_import'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/tree/visitors/base.rb:36:in `visit'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:160:in `block in visit'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/stack.rb:79:in `block in with_base'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/stack.rb:115:in `with_frame'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/stack.rb:79:in `with_base'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:160:in `visit'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:328:in `block (2 levels) in visit_import'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:328:in `map'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:328:in `block in visit_import'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/stack.rb:88:in `block in with_import'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/stack.rb:115:in `with_frame'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/stack.rb:88:in `with_import'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:325:in `visit_import'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/tree/visitors/base.rb:36:in `visit'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:160:in `block in visit'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/stack.rb:79:in `block in with_base'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/stack.rb:115:in `with_frame'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/stack.rb:79:in `with_base'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:160:in `visit'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:328:in `block (2 levels) in visit_import'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:328:in `map'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:328:in `block in visit_import'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/stack.rb:88:in `block in with_import'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/stack.rb:115:in `with_frame'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/stack.rb:88:in `with_import'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:325:in `visit_import'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/tree/visitors/base.rb:36:in `visit'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:160:in `block in visit'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/stack.rb:79:in `block in with_base'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/stack.rb:115:in `with_frame'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/stack.rb:79:in `with_base'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:160:in `visit'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/tree/visitors/base.rb:52:in `block in visit_children'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/tree/visitors/base.rb:52:in `map'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/tree/visitors/base.rb:52:in `visit_children'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:169:in `block in visit_children'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:181:in `with_environment'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:168:in `visit_children'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/tree/visitors/base.rb:36:in `block in visit'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:188:in `visit_root'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/tree/visitors/base.rb:36:in `visit'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:159:in `visit'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/tree/visitors/perform.rb:8:in `visit'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/tree/root_node.rb:36:in `css_tree'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/tree/root_node.rb:20:in `render'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/engine.rb:281:in `render'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/compass-import-once-1.0.5/lib/compass/import-once/engine.rb:17:in `block in render'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/compass-import-once-1.0.5/lib/compass/import-once/engine.rb:29:in `with_import_scope'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/compass-import-once-1.0.5/lib/compass/import-once/engine.rb:16:in `render'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/plugin/compiler.rb:494:in `update_stylesheet'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/plugin/compiler.rb:215:in `block in update_stylesheets'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/plugin/compiler.rb:209:in `each'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/sass-3.4.22/lib/sass/plugin/compiler.rb:209:in `update_stylesheets'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/compass-1.0.3/lib/compass/sass_compiler.rb:40:in `compile!'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/compass-1.0.3/lib/compass/commands/update_project.rb:49:in `perform'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/compass-1.0.3/lib/compass/commands/base.rb:18:in `execute'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/compass-1.0.3/lib/compass/commands/project_base.rb:19:in `execute'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/compass-1.0.3/lib/compass/exec/sub_command_ui.rb:43:in `perform!'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/compass-1.0.3/lib/compass/exec/sub_command_ui.rb:15:in `run!'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/compass-1.0.3/bin/compass:30:in `block in <top (required)>'
C:/Ruby23-x64/lib/ruby/gems/2.3.0/gems/compass-1.0.3/bin/compass:44:in `<top (required)>'
C:/Ruby23-x64/bin/compass:22:in `load'
C:/Ruby23-x64/bin/compass:22:in `<main>'
If I remove
#import "compass/css3/images";
it will compile perfectly fine, but then my radial-gradient will not be "CSS'd"
My config.rb
require 'compass/import-once/activate'
# Set this to the root of your project when deployed:
http_path = "/"
css_dir = "stylesheets"
css_path = "C:/Development/Projects/SparNord.LeadGenUmbraco/SparNord.LeadGenUmbraco/css/studiepakke/"
sass_dir = "sass"
images_dir = "images"
javascripts_dir = "javascripts"
What am I doing wrong

Did a reinstall of the 32bit version. That did the trick

Errno::EMFILE: Too many open files when upgrading to ruby 2.3

I just upgrade to ruby 2.3 in order to take benefits of the frozen_string_literal option but it produce me the error Errno::EMFILE: Too many open files in production.
When I downgrade to ruby 2.2.3, no more errors.
Here is one of the ruby 2.3 error calltrace I have :
Errno::EMFILE: Too many open files - socket(2) for "XX.XXX.XX.XXX" port 9200 (XX.XXX.XX.XXX:9200)
/.../production/shared/bundle/ruby/2.3.0/gems/httpclient-2.7.1/lib/httpclient/session.rb:597:in `initialize'
/.../production/shared/bundle/ruby/2.3.0/gems/httpclient-2.7.1/lib/httpclient/session.rb:597:in `new'
/.../production/shared/bundle/ruby/2.3.0/gems/httpclient-2.7.1/lib/httpclient/session.rb:597:in `create_socket'
/.../production/shared/bundle/ruby/2.3.0/gems/httpclient-2.7.1/lib/httpclient/session.rb:742:in `block in connect'
/.../.rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/timeout.rb:91:in `block in timeout'
/.../.rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/timeout.rb:101:in `timeout'
/.../production/shared/bundle/ruby/2.3.0/gems/httpclient-2.7.1/lib/httpclient/session.rb:735:in `connect'
/.../production/shared/bundle/ruby/2.3.0/gems/httpclient-2.7.1/lib/httpclient/session.rb:497:in `query'
/.../production/shared/bundle/ruby/2.3.0/gems/httpclient-2.7.1/lib/httpclient/session.rb:170:in `query'
/.../production/shared/bundle/ruby/2.3.0/gems/httpclient-2.7.1/lib/httpclient.rb:1238:in `do_get_block'
/.../production/shared/bundle/ruby/2.3.0/gems/httpclient-2.7.1/lib/httpclient.rb:1021:in `block in do_request'
/.../production/shared/bundle/ruby/2.3.0/gems/httpclient-2.7.1/lib/httpclient.rb:1129:in `protect_keep_alive_disconnected'
/.../production/shared/bundle/ruby/2.3.0/gems/httpclient-2.7.1/lib/httpclient.rb:1016:in `do_request'
/.../production/shared/bundle/ruby/2.3.0/gems/httpclient-2.7.1/lib/httpclient.rb:858:in `request'
/.../production/shared/bundle/ruby/2.3.0/gems/faraday-0.9.2/lib/faraday/adapter/httpclient.rb:36:in `call'
/.../production/shared/bundle/ruby/2.3.0/gems/faraday-0.9.2/lib/faraday/rack_builder.rb:139:in `build_response'
/.../production/shared/bundle/ruby/2.3.0/gems/faraday-0.9.2/lib/faraday/connection.rb:377:in `run_request'
/.../production/shared/bundle/ruby/2.3.0/bundler/gems/elasticsearch-ruby-a5ed3f6aa679/elasticsearch-transport/lib/elasticsearch/transport/transport/http/faraday.rb:21:in `block in perform_request'
/.../production/shared/bundle/ruby/2.3.0/bundler/gems/elasticsearch-ruby-a5ed3f6aa679/elasticsearch-transport/lib/elasticsearch/transport/transport/base.rb:201:in `perform_request'
/.../production/shared/bundle/ruby/2.3.0/bundler/gems/elasticsearch-ruby-a5ed3f6aa679/elasticsearch-transport/lib/elasticsearch/transport/transport/http/faraday.rb:20:in `perform_request'
/.../production/shared/bundle/ruby/2.3.0/bundler/gems/elasticsearch-ruby-a5ed3f6aa679/elasticsearch-transport/lib/elasticsearch/transport/client.rb:125:in `perform_request'
/.../production/shared/bundle/ruby/2.3.0/bundler/gems/elasticsearch-ruby-a5ed3f6aa679/elasticsearch-api/lib/elasticsearch/api/actions/index.rb:99:in `index'
/.../production/shared/bundle/ruby/2.3.0/bundler/gems/elasticsearch-rails-489ab24998a8/elasticsearch-model/lib/elasticsearch/model/indexing.rb:336:in `index_document'
/.../production/releases/20160128001123/app/models/concerns/elastic_search/searchable.rb:12:in `block (3 levels) in '
/.../production/releases/20160128001123/app/jobs/elasticsearch_job.rb:9:in `perform'
/.../production/shared/bundle/ruby/2.3.0/gems/activejob-4.2.5.1/lib/active_job/execution.rb:32:in `block in perform_now'
/.../production/shared/bundle/ruby/2.3.0/gems/activesupport-4.2.5.1/lib/active_support/callbacks.rb:117:in `call'
/.../production/shared/bundle/ruby/2.3.0/gems/activesupport-4.2.5.1/lib/active_support/callbacks.rb:555:in `block (2 levels) in compile'
/.../production/shared/bundle/ruby/2.3.0/gems/activesupport-4.2.5.1/lib/active_support/callbacks.rb:505:in `call'
/.../production/shared/bundle/ruby/2.3.0/gems/activesupport-4.2.5.1/lib/active_support/callbacks.rb:498:in `block (2 levels) in around'
/.../production/shared/bundle/ruby/2.3.0/gems/activesupport-4.2.5.1/lib/active_support/callbacks.rb:343:in `block (2 levels) in simple'
/.../production/shared/bundle/ruby/2.3.0/gems/activesupport-4.2.5.1/lib/active_support/callbacks.rb:441:in `instance_exec'
/.../production/shared/bundle/ruby/2.3.0/gems/activesupport-4.2.5.1/lib/active_support/callbacks.rb:441:in `block in make_lambda'
/.../production/shared/bundle/ruby/2.3.0/gems/activesupport-4.2.5.1/lib/active_support/callbacks.rb:342:in `block in simple'
/.../production/shared/bundle/ruby/2.3.0/gems/activesupport-4.2.5.1/lib/active_support/callbacks.rb:497:in `block in around'
/.../production/shared/bundle/ruby/2.3.0/gems/activesupport-4.2.5.1/lib/active_support/callbacks.rb:505:in `call'
/.../production/shared/bundle/ruby/2.3.0/gems/activesupport-4.2.5.1/lib/active_support/callbacks.rb:498:in `block (2 levels) in around'
/.../production/shared/bundle/ruby/2.3.0/gems/activesupport-4.2.5.1/lib/active_support/callbacks.rb:343:in `block (2 levels) in simple'
/.../production/shared/bundle/ruby/2.3.0/gems/i18n-0.7.0/lib/i18n.rb:257:in `with_locale'
/.../production/shared/bundle/ruby/2.3.0/gems/activejob-4.2.5.1/lib/active_job/translation.rb:7:in `block (2 levels) in '
/.../production/shared/bundle/ruby/2.3.0/gems/activesupport-4.2.5.1/lib/active_support/callbacks.rb:441:in `instance_exec'
/.../production/shared/bundle/ruby/2.3.0/gems/activesupport-4.2.5.1/lib/active_support/callbacks.rb:441:in `block in make_lambda'
/.../production/shared/bundle/ruby/2.3.0/gems/activesupport-4.2.5.1/lib/active_support/callbacks.rb:342:in `block in simple'
/.../production/shared/bundle/ruby/2.3.0/gems/activesupport-4.2.5.1/lib/active_support/callbacks.rb:497:in `block in around'
/.../production/shared/bundle/ruby/2.3.0/gems/activesupport-4.2.5.1/lib/active_support/callbacks.rb:505:in `call'
/.../production/shared/bundle/ruby/2.3.0/gems/activesupport-4.2.5.1/lib/active_support/callbacks.rb:498:in `block (2 levels) in around'
/.../production/shared/bundle/ruby/2.3.0/gems/activesupport-4.2.5.1/lib/active_support/callbacks.rb:343:in `block (2 levels) in simple'
/.../production/shared/bundle/ruby/2.3.0/gems/activejob-4.2.5.1/lib/active_job/logging.rb:23:in `block (4 levels) in '
/.../production/shared/bundle/ruby/2.3.0/gems/activesupport-4.2.5.1/lib/active_support/notifications.rb:164:in `block in instrument'
/.../production/shared/bundle/ruby/2.3.0/gems/activesupport-4.2.5.1/lib/active_support/notifications/instrumenter.rb:20:in `instrument'
/.../production/shared/bundle/ruby/2.3.0/gems/activesupport-4.2.5.1/lib/active_support/notifications.rb:164:in `instrument'
/.../production/shared/bundle/ruby/2.3.0/gems/activejob-4.2.5.1/lib/active_job/logging.rb:22:in `block (3 levels) in '
/.../production/shared/bundle/ruby/2.3.0/gems/activejob-4.2.5.1/lib/active_job/logging.rb:43:in `block in tag_logger'
/.../production/shared/bundle/ruby/2.3.0/gems/activesupport-4.2.5.1/lib/active_support/tagged_logging.rb:68:in `block in tagged'
/.../production/shared/bundle/ruby/2.3.0/gems/activesupport-4.2.5.1/lib/active_support/tagged_logging.rb:26:in `tagged'
/.../production/shared/bundle/ruby/2.3.0/gems/activesupport-4.2.5.1/lib/active_support/tagged_logging.rb:68:in `tagged'
/.../production/shared/bundle/ruby/2.3.0/gems/activejob-4.2.5.1/lib/active_job/logging.rb:43:in `tag_logger'
/.../production/shared/bundle/ruby/2.3.0/gems/activejob-4.2.5.1/lib/active_job/logging.rb:19:in `block (2 levels) in '
/.../production/shared/bundle/ruby/2.3.0/gems/activesupport-4.2.5.1/lib/active_support/callbacks.rb:441:in `instance_exec'
/.../production/shared/bundle/ruby/2.3.0/gems/activesupport-4.2.5.1/lib/active_support/callbacks.rb:441:in `block in make_lambda'
/.../production/shared/bundle/ruby/2.3.0/gems/activesupport-4.2.5.1/lib/active_support/callbacks.rb:342:in `block in simple'
/.../production/shared/bundle/ruby/2.3.0/gems/activesupport-4.2.5.1/lib/active_support/callbacks.rb:497:in `block in around'
/.../production/shared/bundle/ruby/2.3.0/gems/activesupport-4.2.5.1/lib/active_support/callbacks.rb:505:in `call'
/.../production/shared/bundle/ruby/2.3.0/gems/activesupport-4.2.5.1/lib/active_support/callbacks.rb:92:in `__run_callbacks__'
/.../production/shared/bundle/ruby/2.3.0/gems/activesupport-4.2.5.1/lib/active_support/callbacks.rb:778:in `_run_perform_callbacks'
/.../production/shared/bundle/ruby/2.3.0/gems/activesupport-4.2.5.1/lib/active_support/callbacks.rb:81:in `run_callbacks'
/.../production/shared/bundle/ruby/2.3.0/gems/activejob-4.2.5.1/lib/active_job/execution.rb:31:in `perform_now'
/.../production/shared/bundle/ruby/2.3.0/gems/activejob-4.2.5.1/lib/active_job/execution.rb:21:in `execute'
/.../production/shared/bundle/ruby/2.3.0/gems/activejob-4.2.5.1/lib/active_job/queue_adapters/sidekiq_adapter.rb:42:in `perform'
/.../production/shared/bundle/ruby/2.3.0/gems/sidekiq-3.5.4/lib/sidekiq/processor.rb:80:in `execute_job'
/.../production/shared/bundle/ruby/2.3.0/gems/sidekiq-3.5.4/lib/sidekiq/processor.rb:56:in `block (2 levels) in process'
/.../production/shared/bundle/ruby/2.3.0/gems/sidekiq-3.5.4/lib/sidekiq/middleware/chain.rb:127:in `block in invoke'
/.../production/shared/bundle/ruby/2.3.0/gems/sidekiq-3.5.4/lib/sidekiq/middleware/chain.rb:129:in `block in invoke'
/.../production/shared/bundle/ruby/2.3.0/gems/sidekiq-3.5.4/lib/sidekiq/middleware/server/active_record.rb:6:in `call'
/.../production/shared/bundle/ruby/2.3.0/gems/sidekiq-3.5.4/lib/sidekiq/middleware/chain.rb:129:in `block in invoke'
/.../production/shared/bundle/ruby/2.3.0/gems/sidekiq-3.5.4/lib/sidekiq/middleware/server/retry_jobs.rb:74:in `call'
/.../production/shared/bundle/ruby/2.3.0/gems/sidekiq-3.5.4/lib/sidekiq/middleware/chain.rb:129:in `block in invoke'
/.../production/shared/bundle/ruby/2.3.0/gems/sidekiq-failures-0.4.5/lib/sidekiq/failures/middleware.rb:9:in `call'
/.../production/shared/bundle/ruby/2.3.0/gems/sidekiq-3.5.4/lib/sidekiq/middleware/chain.rb:129:in `block in invoke'
/.../production/shared/bundle/ruby/2.3.0/gems/sidekiq-3.5.4/lib/sidekiq/middleware/server/logging.rb:11:in `block in call'
/.../production/shared/bundle/ruby/2.3.0/gems/sidekiq-3.5.4/lib/sidekiq/logging.rb:30:in `with_context'
/.../production/shared/bundle/ruby/2.3.0/gems/sidekiq-3.5.4/lib/sidekiq/middleware/server/logging.rb:7:in `call'
/.../production/shared/bundle/ruby/2.3.0/gems/sidekiq-3.5.4/lib/sidekiq/middleware/chain.rb:129:in `block in invoke'
/.../production/shared/bundle/ruby/2.3.0/gems/sidekiq-3.5.4/lib/sidekiq/middleware/chain.rb:132:in `invoke'
/.../production/shared/bundle/ruby/2.3.0/gems/sidekiq-3.5.4/lib/sidekiq/processor.rb:51:in `block in process'
/.../production/shared/bundle/ruby/2.3.0/gems/sidekiq-3.5.4/lib/sidekiq/processor.rb:104:in `stats'
/.../production/shared/bundle/ruby/2.3.0/gems/sidekiq-3.5.4/lib/sidekiq/processor.rb:50:in `process'
/.../production/shared/bundle/ruby/2.3.0/gems/celluloid-0.17.3/lib/celluloid/calls.rb:28:in `public_send'
/.../production/shared/bundle/ruby/2.3.0/gems/celluloid-0.17.3/lib/celluloid/calls.rb:28:in `dispatch'
/.../production/shared/bundle/ruby/2.3.0/gems/celluloid-0.17.3/lib/celluloid/call/async.rb:7:in `dispatch'
/.../production/shared/bundle/ruby/2.3.0/gems/celluloid-0.17.3/lib/celluloid/cell.rb:50:in `block in dispatch'
/.../production/shared/bundle/ruby/2.3.0/gems/celluloid-0.17.3/lib/celluloid/cell.rb:76:in `block in task'
/.../production/shared/bundle/ruby/2.3.0/gems/celluloid-0.17.3/lib/celluloid/actor.rb:339:in `block in task'
/.../production/shared/bundle/ruby/2.3.0/gems/celluloid-0.17.3/lib/celluloid/task.rb:44:in `block in initialize'
/.../production/shared/bundle/ruby/2.3.0/gems/celluloid-0.17.3/lib/celluloid/task/fibered.rb:14:in `block in create'
I did not find someone with this concern on the ruby bug tracker nor on stackoverflow and the ruby 2.3 is recent (<2 months).
How can I deal with this?

DEPRECATION WARNING: Passing null, a non-string value, to unquote()

I am running Sass, Compass, and Susy. I upgraded to the latest versions:
bigdecimal (1.2.4)
chunky_png (1.3.3)
compass (1.0.3)
compass-core (1.0.3)
compass-import-once (1.0.5)
ffi (1.9.6 x86-mingw32)
io-console (0.4.2)
json (1.8.1)
minitest (4.7.5)
multi_json (1.10.1)
psych (2.0.5)
rake (10.1.0)
rb-fsevent (0.9.4)
rb-inotify (0.9.5)
rdoc (4.1.0)
sass (3.4.10)
susy (2.2.1)
test-unit (2.1.5.0)
The full deprecation warning is:
DEPRECATION WARNING: Passing null, a non-string value, to unquote()
will be an error in future versions of Sass.
I ran "compass compile --trace" but it did not add any extra information. Does anybody know how to go about finding where the problem is. From what I understand it could be Compass or Susy. Please advise.

It seems that the problem is with Compass. What follows is my investigation that makes me conclude this. I found where this warning is displayed by doing a search in the Sass installation (in my case "C:\Ruby21\lib\ruby\gems\2.1.0\gems\sass-3.4.10\lib\sass"). It is the "..\scripts\functions.rb":
def unquote(string)
unless string.is_a?(Sass::Script::Value::String)
Sass::Util.sass_warn(<<MESSAGE)
DEPRECATION WARNING: Passing #{string.to_sass}, a non-string value, to unquote()
will be an error in future versions of Sass.
MESSAGE
return string
end
return string if string.type == :identifier
identifier(string.value)
end
declare :unquote, [:string]
I put a "puts caller" inside the "unless" to see who is calling this function without a parameter and here was the output:
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/script/tree/funcall.rb:140:in `_perform'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/script/tree/node.rb:50:in `perform'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:468:in `visit_variable'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/base.rb:36:in `visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:158:in `block in visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:79:in `block in with_base'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:115:in `with_frame'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:79:in `with_base'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:158:in `visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:363:in `block (4 levels) in visit_mixin'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:363:in `map'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:363:in `block (3 levels) in visit_mixin'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:179:in `with_environment'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:363:in `block (2 levels) in visit_mixin'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:84:in `perform_arguments'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:358:in `block in visit_mixin'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:98:in `block in with_mixin'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:115:in `with_frame'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:98:in `with_mixin'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:346:in `visit_mixin'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/base.rb:36:in `visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:158:in `block in visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:79:in `block in with_base'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:115:in `with_frame'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:79:in `with_base'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:158:in `visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:299:in `block (2 levels) in visit_if'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:299:in `map'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:299:in `block in visit_if'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:179:in `with_environment'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:298:in `visit_if'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/base.rb:36:in `visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:158:in `block in visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:79:in `block in with_base'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:115:in `with_frame'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:79:in `with_base'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:158:in `visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:363:in `block (4 levels) in visit_mixin'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:363:in `map'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:363:in `block (3 levels) in visit_mixin'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:179:in `with_environment'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:363:in `block (2 levels) in visit_mixin'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:84:in `perform_arguments'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:358:in `block in visit_mixin'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:98:in `block in with_mixin'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:115:in `with_frame'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:98:in `with_mixin'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:346:in `visit_mixin'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/base.rb:36:in `visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:158:in `block in visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:79:in `block in with_base'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:115:in `with_frame'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:79:in `with_base'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:158:in `visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:299:in `block (2 levels) in visit_if'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:299:in `map'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:299:in `block in visit_if'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:179:in `with_environment'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:298:in `visit_if'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/base.rb:36:in `visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:158:in `block in visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:79:in `block in with_base'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:115:in `with_frame'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:79:in `with_base'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:158:in `visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:302:in `visit_if'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/base.rb:36:in `visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:158:in `block in visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:79:in `block in with_base'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:115:in `with_frame'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:79:in `with_base'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:158:in `visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:302:in `visit_if'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/base.rb:36:in `visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:158:in `block in visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:79:in `block in with_base'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:115:in `with_frame'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:79:in `with_base'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:158:in `visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:302:in `visit_if'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/base.rb:36:in `visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:158:in `block in visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:79:in `block in with_base'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:115:in `with_frame'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:79:in `with_base'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:158:in `visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:302:in `visit_if'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/base.rb:36:in `visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:158:in `block in visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:79:in `block in with_base'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:115:in `with_frame'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:79:in `with_base'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:158:in `visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:363:in `block (4 levels) in visit_mixin'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:363:in `map'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:363:in `block (3 levels) in visit_mixin'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:179:in `with_environment'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:363:in `block (2 levels) in visit_mixin'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:84:in `perform_arguments'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:358:in `block in visit_mixin'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:98:in `block in with_mixin'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:115:in `with_frame'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:98:in `with_mixin'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:346:in `visit_mixin'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/base.rb:36:in `visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:158:in `block in visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:79:in `block in with_base'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:115:in `with_frame'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:79:in `with_base'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:158:in `visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:240:in `block (3 levels) in visit_each'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:240:in `map'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:240:in `block (2 levels) in visit_each'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:232:in `map'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:232:in `block in visit_each'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:179:in `with_environment'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:231:in `visit_each'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/base.rb:36:in `visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:158:in `block in visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:79:in `block in with_base'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:115:in `with_frame'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:79:in `with_base'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:158:in `visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:363:in `block (4 levels) in visit_mixin'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:363:in `map'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:363:in `block (3 levels) in visit_mixin'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:179:in `with_environment'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:363:in `block (2 levels) in visit_mixin'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:84:in `perform_arguments'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:358:in `block in visit_mixin'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:98:in `block in with_mixin'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:115:in `with_frame'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:98:in `with_mixin'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:346:in `visit_mixin'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/base.rb:36:in `visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:158:in `block in visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:79:in `block in with_base'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:115:in `with_frame'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:79:in `with_base'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:158:in `visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:363:in `block (4 levels) in visit_mixin'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:363:in `map'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:363:in `block (3 levels) in visit_mixin'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:179:in `with_environment'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:363:in `block (2 levels) in visit_mixin'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:84:in `perform_arguments'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:358:in `block in visit_mixin'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:98:in `block in with_mixin'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:115:in `with_frame'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:98:in `with_mixin'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:346:in `visit_mixin'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/base.rb:36:in `visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:158:in `block in visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:79:in `block in with_base'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:115:in `with_frame'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:79:in `with_base'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:158:in `visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:430:in `block (2 levels) in visit_rule'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:430:in `map'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:430:in `block in visit_rule'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:179:in `with_environment'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:428:in `visit_rule'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/base.rb:36:in `visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:158:in `block in visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:79:in `block in with_base'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:115:in `with_frame'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:79:in `with_base'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:158:in `visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:325:in `block (2 levels) in visit_import'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:325:in `map'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:325:in `block in visit_import'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:88:in `block in with_import'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:115:in `with_frame'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:88:in `with_import'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:322:in `visit_import'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/base.rb:36:in `visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:158:in `block in visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:79:in `block in with_base'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:115:in `with_frame'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/stack.rb:79:in `with_base'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:158:in `visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/base.rb:52:in `block in visit_children'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/base.rb:52:in `map'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/base.rb:52:in `visit_children'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:167:in `block in visit_children'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:179:in `with_environment'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:166:in `visit_children'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/base.rb:36:in `block in visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:186:in `visit_root'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/base.rb:36:in `visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:157:in `visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/visitors/perform.rb:8:in `visit'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/root_node.rb:36:in `css_tree'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/tree/root_node.rb:20:in `render'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/engine.rb:268:in `render'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/plugin/compiler.rb:492:in `update_stylesheet'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/plugin/compiler.rb:215:in `block in update_stylesheets'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/plugin/compiler.rb:209:in `each'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/sass-3.4.10/lib/sass/plugin/compiler.rb:209:in `update_stylesheets'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/compass-1.0.3/lib/compass/sass_compiler.rb:40:in `compile!'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/compass-1.0.3/lib/compass/commands/update_project.rb:49:in `perform'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/compass-1.0.3/lib/compass/commands/base.rb:18:in `execute'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/compass-1.0.3/lib/compass/commands/project_base.rb:19:in `execute'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/compass-1.0.3/lib/compass/exec/sub_command_ui.rb:43:in `perform!'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/compass-1.0.3/lib/compass/exec/sub_command_ui.rb:15:in `run!'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/compass-1.0.3/bin/compass:30:in `block in <top (required)>'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/compass-1.0.3/bin/compass:44:in `call'
C:/Ruby21/lib/ruby/gems/2.1.0/gems/compass-1.0.3/bin/compass:44:in `<top (required)>'
C:/Ruby21/bin/compass:23:in `load'
C:/Ruby21/bin/compass:23:in `<main>'
DEPRECATION WARNING: Passing null, a non-string value, to unquote()
will be an error in future versions of Sass.
As you can see the on the bottom of this stacktrace Compass is doing things and it calls Sass. I'm going to file this problem with Compass.
FYI: I posted the bug to the Compass bug tracking https://github.com/Compass/compass/issues/1924.

As mentioned in this thread, it is indeed a Compass problem, related to its box-sizing mixin. You'll find possible solutions on that page. I'm copying them here:
Solution 1 (which I've tested, and the warning disappears):
Add you own custom mixin, which will override Compass mixin:
#mixin box-sizing($value) {
-moz-box-sizing: $value;
box-sizing: $value;
}
Solution 2:
#mixin box-sizing($box-model: $default-box-sizing) {
#if type-of($box-model) == string {
$box-model: unquote($box-model);
}
#include prefixed-properties(css3-boxsizing, $box-sizing-support-threshold, (box-sizing: $box-model));
}

you can create a safe version of unquote, so it won't be called unless it is really a string:
#function safe-unquote($param) {
#return if(type-of($param) == string, unquote($param), $param);
}

undefined method `perform' for nil:NilClass

I'm trying to update font-awesome to last release using .scss.
When i try to compile using campass it throws this error:
>>> Change detected at 17:51:13 to: ui/_font_awesome.scss
NoMethodError on line ["323"] of /usr/local/lib/ruby/gems/1.9.1/gems/sass-3.2.0.alpha.64/lib/sass/tree/visitors/perform.rb: undefined method `perform' for nil:NilClass
/usr/local/lib/ruby/gems/1.9.1/gems/sass-3.2.0.alpha.64/lib/sass/tree/visitors/perform.rb:321:in `map'
/usr/local/lib/ruby/gems/1.9.1/gems/sass-3.2.0.alpha.64/lib/sass/tree/visitors/perform.rb:321:in `run_interp_no_strip'
/usr/local/lib/ruby/gems/1.9.1/gems/sass-3.2.0.alpha.64/lib/sass/tree/visitors/perform.rb:331:in `run_interp'
/usr/local/lib/ruby/gems/1.9.1/gems/sass-3.2.0.alpha.64/lib/sass/tree/visitors/perform.rb:295:in `visit_directive'
/usr/local/lib/ruby/gems/1.9.1/gems/sass-3.2.0.alpha.64/lib/sass/tree/visitors/base.rb:37:in `visit'
/usr/local/lib/ruby/gems/1.9.1/gems/sass-3.2.0.alpha.64/lib/sass/tree/visitors/perform.rb:20:in `visit'
/usr/local/lib/ruby/gems/1.9.1/gems/sass-3.2.0.alpha.64/lib/sass/tree/visitors/perform.rb:146:in `block in visit_import'
/usr/local/lib/ruby/gems/1.9.1/gems/sass-3.2.0.alpha.64/lib/sass/tree/visitors/perform.rb:146:in `map'
/usr/local/lib/ruby/gems/1.9.1/gems/sass-3.2.0.alpha.64/lib/sass/tree/visitors/perform.rb:146:in `visit_import'
/usr/local/lib/ruby/gems/1.9.1/gems/sass-3.2.0.alpha.64/lib/sass/tree/visitors/base.rb:37:in `visit'
/usr/local/lib/ruby/gems/1.9.1/gems/sass-3.2.0.alpha.64/lib/sass/tree/visitors/perform.rb:20:in `visit'
/usr/local/lib/ruby/gems/1.9.1/gems/sass-3.2.0.alpha.64/lib/sass/tree/visitors/perform.rb:146:in `block in visit_import'
/usr/local/lib/ruby/gems/1.9.1/gems/sass-3.2.0.alpha.64/lib/sass/tree/visitors/perform.rb:146:in `map'
/usr/local/lib/ruby/gems/1.9.1/gems/sass-3.2.0.alpha.64/lib/sass/tree/visitors/perform.rb:146:in `visit_import'
/usr/local/lib/ruby/gems/1.9.1/gems/sass-3.2.0.alpha.64/lib/sass/tree/visitors/base.rb:37:in `visit'
/usr/local/lib/ruby/gems/1.9.1/gems/sass-3.2.0.alpha.64/lib/sass/tree/visitors/perform.rb:20:in `visit'
/usr/local/lib/ruby/gems/1.9.1/gems/sass-3.2.0.alpha.64/lib/sass/tree/visitors/base.rb:53:in `block in visit_children'
/usr/local/lib/ruby/gems/1.9.1/gems/sass-3.2.0.alpha.64/lib/sass/tree/visitors/base.rb:53:in `map'
/usr/local/lib/ruby/gems/1.9.1/gems/sass-3.2.0.alpha.64/lib/sass/tree/visitors/base.rb:53:in `visit_children'
/usr/local/lib/ruby/gems/1.9.1/gems/sass-3.2.0.alpha.64/lib/sass/tree/visitors/perform.rb:29:in `block in visit_children'
/usr/local/lib/ruby/gems/1.9.1/gems/sass-3.2.0.alpha.64/lib/sass/tree/visitors/perform.rb:41:in `with_environment'
/usr/local/lib/ruby/gems/1.9.1/gems/sass-3.2.0.alpha.64/lib/sass/tree/visitors/perform.rb:28:in `visit_children'
/usr/local/lib/ruby/gems/1.9.1/gems/sass-3.2.0.alpha.64/lib/sass/tree/visitors/base.rb:37:in `block in visit'
/usr/local/lib/ruby/gems/1.9.1/gems/sass-3.2.0.alpha.64/lib/sass/tree/visitors/perform.rb:49:in `visit_root'
/usr/local/lib/ruby/gems/1.9.1/gems/sass-3.2.0.alpha.64/lib/sass/tree/visitors/base.rb:37:in `visit'
/usr/local/lib/ruby/gems/1.9.1/gems/sass-3.2.0.alpha.64/lib/sass/tree/visitors/perform.rb:20:in `visit'
/usr/local/lib/ruby/gems/1.9.1/gems/sass-3.2.0.alpha.64/lib/sass/tree/visitors/perform.rb:7:in `visit'
/usr/local/lib/ruby/gems/1.9.1/gems/sass-3.2.0.alpha.64/lib/sass/tree/root_node.rb:20:in `render'
/usr/local/lib/ruby/gems/1.9.1/gems/sass-3.2.0.alpha.64/lib/sass/engine.rb:305:in `_render'
/usr/local/lib/ruby/gems/1.9.1/gems/sass-3.2.0.alpha.64/lib/sass/engine.rb:252:in `render'
/usr/local/lib/ruby/gems/1.9.1/gems/compass-0.12.1/lib/compass/compiler.rb:140:in `block (2 levels) in compile'
/usr/local/lib/ruby/gems/1.9.1/gems/compass-0.12.1/lib/compass/compiler.rb:126:in `timed'
/usr/local/lib/ruby/gems/1.9.1/gems/compass-0.12.1/lib/compass/compiler.rb:139:in `block in compile'
/usr/local/lib/ruby/gems/1.9.1/gems/compass-0.12.1/lib/compass/logger.rb:45:in `red'
/usr/local/lib/ruby/gems/1.9.1/gems/compass-0.12.1/lib/compass/compiler.rb:138:in `compile'
/usr/local/lib/ruby/gems/1.9.1/gems/compass-0.12.1/lib/compass/compiler.rb:118:in `compile_if_required'
/usr/local/lib/ruby/gems/1.9.1/gems/compass-0.12.1/lib/compass/compiler.rb:103:in `block (2 levels) in run'
/usr/local/lib/ruby/gems/1.9.1/gems/compass-0.12.1/lib/compass/compiler.rb:101:in `each'
/usr/local/lib/ruby/gems/1.9.1/gems/compass-0.12.1/lib/compass/compiler.rb:101:in `block in run'
/usr/local/lib/ruby/gems/1.9.1/gems/compass-0.12.1/lib/compass/compiler.rb:126:in `timed'
/usr/local/lib/ruby/gems/1.9.1/gems/compass-0.12.1/lib/compass/compiler.rb:100:in `run'
/usr/local/lib/ruby/gems/1.9.1/gems/compass-0.12.1/lib/compass/commands/watch_project.rb:147:in `recompile'
/usr/local/lib/ruby/gems/1.9.1/gems/fssm-0.2.8.1/lib/fssm/path.rb:73:in `call'
/usr/local/lib/ruby/gems/1.9.1/gems/fssm-0.2.8.1/lib/fssm/path.rb:73:in `run_callback'
/usr/local/lib/ruby/gems/1.9.1/gems/fssm-0.2.8.1/lib/fssm/path.rb:55:in `callback_action'
/usr/local/lib/ruby/gems/1.9.1/gems/fssm-0.2.8.1/lib/fssm/path.rb:35:in `update'
/usr/local/lib/ruby/gems/1.9.1/gems/fssm-0.2.8.1/lib/fssm/state/directory.rb:39:in `block in modified'
/usr/local/lib/ruby/gems/1.9.1/gems/fssm-0.2.8.1/lib/fssm/state/directory.rb:37:in `each'
/usr/local/lib/ruby/gems/1.9.1/gems/fssm-0.2.8.1/lib/fssm/state/directory.rb:37:in `modified'
/usr/local/lib/ruby/gems/1.9.1/gems/fssm-0.2.8.1/lib/fssm/state/directory.rb:18:in `refresh'
/usr/local/lib/ruby/gems/1.9.1/gems/fssm-0.2.8.1/lib/fssm/backends/inotify.rb:12:in `block in add_handler'
/usr/local/lib/ruby/gems/1.9.1/gems/rb-inotify-0.8.8/lib/rb-inotify/notifier.rb:200:in `call'
/usr/local/lib/ruby/gems/1.9.1/gems/rb-inotify-0.8.8/lib/rb-inotify/notifier.rb:200:in `block in watch'
/usr/local/lib/ruby/gems/1.9.1/gems/rb-inotify-0.8.8/lib/rb-inotify/watcher.rb:41:in `[]'
/usr/local/lib/ruby/gems/1.9.1/gems/rb-inotify-0.8.8/lib/rb-inotify/watcher.rb:41:in `callback!'
/usr/local/lib/ruby/gems/1.9.1/gems/rb-inotify-0.8.8/lib/rb-inotify/event.rb:128:in `callback!'
/usr/local/lib/ruby/gems/1.9.1/gems/rb-inotify-0.8.8/lib/rb-inotify/notifier.rb:233:in `block in process'
/usr/local/lib/ruby/gems/1.9.1/gems/rb-inotify-0.8.8/lib/rb-inotify/notifier.rb:233:in `each'
/usr/local/lib/ruby/gems/1.9.1/gems/rb-inotify-0.8.8/lib/rb-inotify/notifier.rb:233:in `process'
/usr/local/lib/ruby/gems/1.9.1/gems/rb-inotify-0.8.8/lib/rb-inotify/notifier.rb:216:in `run'
/usr/local/lib/ruby/gems/1.9.1/gems/fssm-0.2.8.1/lib/fssm/backends/inotify.rb:20:in `run'
/usr/local/lib/ruby/gems/1.9.1/gems/fssm-0.2.8.1/lib/fssm/monitor.rb:26:in `run'
/usr/local/lib/ruby/gems/1.9.1/gems/fssm-0.2.8.1/lib/fssm.rb:70:in `monitor'
/usr/local/lib/ruby/gems/1.9.1/gems/compass-0.12.1/lib/compass/commands/watch_project.rb:87:in `perform'
/usr/local/lib/ruby/gems/1.9.1/gems/compass-0.12.1/lib/compass/commands/base.rb:18:in `execute'
/usr/local/lib/ruby/gems/1.9.1/gems/compass-0.12.1/lib/compass/commands/project_base.rb:19:in `execute'
/usr/local/lib/ruby/gems/1.9.1/gems/compass-0.12.1/lib/compass/exec/sub_command_ui.rb:43:in `perform!'
/usr/local/lib/ruby/gems/1.9.1/gems/compass-0.12.1/lib/compass/exec/sub_command_ui.rb:15:in `run!'
/usr/local/lib/ruby/gems/1.9.1/gems/compass-0.12.1/bin/compass:29:in `block in <top (required)>'
/usr/local/lib/ruby/gems/1.9.1/gems/compass-0.12.1/bin/compass:43:in `call'
/usr/local/lib/ruby/gems/1.9.1/gems/compass-0.12.1/bin/compass:43:in `<top (required)>'
/usr/local/bin/compass:19:in `load'
/usr/local/bin/compass:19:in `<main>'
I've spent all afternoon searching to find someone with same problem but didn't find anything...
Any guess about what could be the problem?
Ty!

Check any directives you have added to your sass files recently (#include, #import, #extend) and verify that there are no typos.
You may get this error when sass tries to execute a directive it does not recognize.
eg. say you typed #includ when you meant #include

Ruby Compass outputting backtrace in CSS

Compass is outputting a backtrace in the CSS instead of generating the CSS. I have had the same results for Windows 7 and Ubuntu Linux 12.0 I have tested this on Compass 0.12.2 AND 0.11.1 and I tested this on Ruby 1.9.3p385 AND 1.9.1P378.
My config.rb file:
# Require any additional compass plugins here.
http_path = "/n4"
css_dir = "css"
sass_dir = "sass"
images_dir = "images"
javascripts_dir = "js"
# relative_assets = true
output_style = :compact #or :nested, :expanded, :compressed
line_comments = false
# Disable these for production (also when viewing in IE6; will cause unnecessary display errors)
# sass_options = {:debug_info => true}
The contents of the CSS file:
/*
Syntax error: Undefined mixin 'linear-gradient'.
on line 305 of C:/Users/bens/workspace/n4e/src/main/webapp/sass/screen.sass, in `linear-gradient'
from line 305 of C:/Users/bens/workspace/n4e/src/main/webapp/sass/screen.sass, in `button_style'
from line 590 of C:/Users/bens/workspace/n4e/src/main/webapp/sass/screen.sass
Backtrace:
C:/Users/bens/workspace/n4e/src/main/webapp/sass/screen.sass:305:in `linear-gradient'
C:/Users/bens/workspace/n4e/src/main/webapp/sass/screen.sass:305:in `button_style'
C:/Users/bens/workspace/n4e/src/main/webapp/sass/screen.sass:590
C:/Ruby193/lib/ruby/gems/1.9.1/gems/sass-3.2.5/lib/sass/tree/visitors/perform.rb:251:in `visit_mixin'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/sass-3.2.5/lib/sass/tree/visitors/base.rb:37:in `visit'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/sass-3.2.5/lib/sass/tree/visitors/perform.rb:98:in `visit'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/sass-3.2.5/lib/sass/tree/visitors/perform.rb:266:in `block (3 levels) in visit_mixin'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/sass-3.2.5/lib/sass/tree/visitors/perform.rb:266:in `map'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/sass-3.2.5/lib/sass/tree/visitors/perform.rb:266:in `block (2 levels) in visit_mixin'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/sass-3.2.5/lib/sass/tree/visitors/perform.rb:119:in `with_environment'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/sass-3.2.5/lib/sass/tree/visitors/perform.rb:266:in `block in visit_mixin'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/sass-3.2.5/lib/sass/tree/visitors/perform.rb:68:in `perform_arguments'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/sass-3.2.5/lib/sass/tree/visitors/perform.rb:261:in `visit_mixin'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/sass-3.2.5/lib/sass/tree/visitors/base.rb:37:in `visit'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/sass-3.2.5/lib/sass/tree/visitors/perform.rb:98:in `visit'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/sass-3.2.5/lib/sass/tree/visitors/base.rb:53:in `block in visit_children'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/sass-3.2.5/lib/sass/tree/visitors/base.rb:53:in `map'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/sass-3.2.5/lib/sass/tree/visitors/base.rb:53:in `visit_children'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/sass-3.2.5/lib/sass/tree/visitors/perform.rb:107:in `block in visit_children'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/sass-3.2.5/lib/sass/tree/visitors/perform.rb:119:in `with_environment'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/sass-3.2.5/lib/sass/tree/visitors/perform.rb:106:in `visit_children'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/sass-3.2.5/lib/sass/tree/visitors/base.rb:37:in `block in visit'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/sass-3.2.5/lib/sass/tree/visitors/perform.rb:318:in `visit_rule'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/sass-3.2.5/lib/sass/tree/visitors/base.rb:37:in `visit'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/sass-3.2.5/lib/sass/tree/visitors/perform.rb:98:in `visit'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/sass-3.2.5/lib/sass/tree/visitors/base.rb:53:in `block in visit_children'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/sass-3.2.5/lib/sass/tree/visitors/base.rb:53:in `map'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/sass-3.2.5/lib/sass/tree/visitors/base.rb:53:in `visit_children'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/sass-3.2.5/lib/sass/tree/visitors/perform.rb:107:in `block in visit_children'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/sass-3.2.5/lib/sass/tree/visitors/perform.rb:119:in `with_environment'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/sass-3.2.5/lib/sass/tree/visitors/perform.rb:106:in `visit_children'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/sass-3.2.5/lib/sass/tree/visitors/base.rb:37:in `block in visit'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/sass-3.2.5/lib/sass/tree/visitors/perform.rb:126:in `visit_root'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/sass-3.2.5/lib/sass/tree/visitors/base.rb:37:in `visit'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/sass-3.2.5/lib/sass/tree/visitors/perform.rb:98:in `visit'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/sass-3.2.5/lib/sass/tree/visitors/perform.rb:7:in `visit'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/sass-3.2.5/lib/sass/tree/root_node.rb:20:in `render'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/sass-3.2.5/lib/sass/engine.rb:315:in `_render'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/sass-3.2.5/lib/sass/engine.rb:262:in `render'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/compass-0.12.2/lib/compass/compiler.rb:140:in `block (2 levels) in compile'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/compass-0.12.2/lib/compass/compiler.rb:126:in `timed'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/compass-0.12.2/lib/compass/compiler.rb:139:in `block in compile'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/compass-0.12.2/lib/compass/logger.rb:45:in `red'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/compass-0.12.2/lib/compass/compiler.rb:138:in `compile'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/compass-0.12.2/lib/compass/compiler.rb:118:in `compile_if_required'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/compass-0.12.2/lib/compass/compiler.rb:103:in `block (2 levels) in run'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/compass-0.12.2/lib/compass/compiler.rb:101:in `each'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/compass-0.12.2/lib/compass/compiler.rb:101:in `block in run'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/compass-0.12.2/lib/compass/compiler.rb:126:in `timed'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/compass-0.12.2/lib/compass/compiler.rb:100:in `run'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/compass- 0.12.2/lib/compass/commands/watch_project.rb:147:in `recompile'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/fssm-0.2.10/lib/fssm/path.rb:73:in `call'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/fssm-0.2.10/lib/fssm/path.rb:73:in `run_callback'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/fssm-0.2.10/lib/fssm/path.rb:55:in `callback_action'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/fssm-0.2.10/lib/fssm/path.rb:35:in `update'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/fssm-0.2.10/lib/fssm/state/directory.rb:39:in `block in modified'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/fssm-0.2.10/lib/fssm/state/directory.rb:37:in `each'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/fssm-0.2.10/lib/fssm/state/directory.rb:37:in `modified'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/fssm-0.2.10/lib/fssm/state/directory.rb:18:in `refresh'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/fssm-0.2.10/lib/fssm/backends/polling.rb:17:in `block (2 levels) in run'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/fssm-0.2.10/lib/fssm/backends/polling.rb:17:in `each'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/fssm-0.2.10/lib/fssm/backends/polling.rb:17:in `block in run'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/fssm-0.2.10/lib/fssm/backends/polling.rb:15:in `loop'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/fssm-0.2.10/lib/fssm/backends/polling.rb:15:in `run'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/fssm-0.2.10/lib/fssm/monitor.rb:26:in `run'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/fssm-0.2.10/lib/fssm.rb:70:in `monitor'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/compass-0.12.2/lib/compass/commands/watch_project.rb:87:in `perform'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/compass-0.12.2/lib/compass/commands/base.rb:18:in `execute'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/compass-0.12.2/lib/compass/commands/project_base.rb:19:in `execute'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/compass-0.12.2/lib/compass/exec/sub_command_ui.rb:43:in `perform!'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/compass-0.12.2/lib/compass/exec/sub_command_ui.rb:15:in `run!'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/compass-0.12.2/bin/compass:30:in `block in <top (required)>'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/compass-0.12.2/bin/compass:44:in `call'
C:/Ruby193/lib/ruby/gems/1.9.1/gems/compass-0.12.2/bin/compass:44:in `<top (required)>'
C:/Ruby193/bin/compass:23:in `load'
C:/Ruby193/bin/compass:23:in `<main>'
*/
body:before {
white-space: pre;
font-family: monospace;
content: "Syntax error: Undefined mixin 'linear-gradient'.\A on line 305 of C:/Users/bens/workspace/n4e/src/main/webapp/sass/screen.sass, in `linear-gradient'\A from line 305 of C:/Users/bens/workspace/n4e/src/main/webapp/sass/screen.sass, in `button_style'\A from line 590 of C:/Users/bens/workspace/n4e/src/main/webapp/sass/screen.sass"; }

Linear-gradient isn't a mixin in Compass. It is a function that's intended to be used in combination with the background or background-image mixins.
http://compass-style.org/reference/compass/css3/images/

You're seeing that message because you have an error in your SASS file. When there are errors, SASS will output the error, a back trace (as you've noticed) and a CSS rule prepending the error before the <body> tag.

Develop Reference

ruby bash windows laravel spring algorithm oracle macos go visual-studio

Compass | Can't compile! Zlib Buffer error - ruby

Did you update your Linux? Try the following: sudo apt-get install zlibc zlib1g-dev zlib1g And then update your ruby: gem update --system

thanks, the problem was that somehow I had a non-image file in the sprites folder.

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