Zerigo DNS on Heroku error after app removed and recreated - heroku

im having a problem with Heroku and Zerigo DNS.
Im using Zerigo to make DNS work on heroku, the problem began when i delete the app to rebuild all my web site.
Once i delete and rebuild i couldn't install Zerigo DNS to the new app. The problem is even worse because my domain still works!
As you guys can see, when you access http://www.estatisticaslotofacil.com.br, you are redirect to a web site. This site is hosted on heroku using Zerigo DNS.
But i dont install Zerigo to this new app, because it keeps giving me this message:
! could not create zone; already registered on Zerigo to a different account?
Can someone help solve this?

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cname only allow you to point subdomain, so this case you should be able to see www subdomain pointed to Heroku, can you try to remove the A record.
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So for anyone who cares, I solved my own problem.
It was the difference between pointing to www.mydomain.herokuapp.com versus mydomain.herokuapp.com from my DNS server.
Pointing to mydomain.herokuapp.com goes to my heroku app, mydomain.
Pointing to www.mydomain.herokuapp.com goes to a "Heroku | No such app" page.
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Or.... just avoid the hassle and use the Zerigo DNS heroku plug-in.

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