Getting Error using Teechart for Mono for Android - teechart

I am getting error while compiling Demo project of TeeChart for Android (Beta version):
Error 1
The type 'Android.Widget.FrameLayout' is defined in an assembly that is not referenced. You must add a reference to assembly 'Mono.Android, Version=0.0.0.0, Culture=neutral, PublicKeyToken=c4c4237547e4b6cd'.
F:\Digital\Digital Mobile Development group\Projects\POC for CT\Supported Component\TeeChartMonodroidBeta201200515\TeeChartMonodroidBeta201200515\Examples\MonoAndroidDemo\ChartEditor.cs 21 20 MonoAndroidDemo
Please help
Thanks
I have verified & refrence to Mono.Android is proper.
Also, to mention that it is not working on my home machine. but on different machine it doesn't show any error while compiling & app get deployed to Android emulator successfully but when i run the app & select any chart option it shows blank screen & come again to list of chart types. Is this component applicable to specific Android version only?

Could you please check that your MonoAndroidDemo project has the Mono.Android.dll reference and if it's broken or missing try adding it again?

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Xamarin Forms, Metadata Error - app used to Build just fine

My first question on the site.
I just came back to my project after 2 days, and have tried out flutter.
My app used to run fine on android, now it gives me a metadata error
Severity Code Description Project File Line Suppression State
Error CS0006 Metadata file
'C:\Users\frede\source\repos\GoogleCalendarStatistics\GoogleCalendarStatistics\bin\Debug\netstandard2.0\ref\GoogleCalendarStatistics.dll'
could not be
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It may do the trick that delete bin and obj folder and rebuild .
Details refer https://forums.xamarin.com/discussion/99983/can-not-build-anymore-error-cs0006-metadata-file-could-not-be-found.

::RegisterWIndowMessage() In Direct 2D application Compile Error

I'm working on a Direct2D (XAML) application (I picked this because I haven't done it before and I wanted to try it out, I thought it would be simple).
I created the project in Visual Studio 2012 using the default options.
I added a button to the GUI successfully.
I added a button press handler to the GUI successfully.
The problem is that I need the button press handler to send a registered windows message. I #include <Windows.h> as instructed by the MSDN docs for ::RegisterWindowMessage(), and finding the declaration and definition of the function with the F12 key works fine.
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Edit: The exact error messages that I'm getting are:
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error C3861: 'RegisterWindowMessage': identifier not found
RegisterWindowMessage is not available in a UWP application (which is likely what you are targeting in a XAML application). If you look into WinUser.h, you'll find the declarations are wrapped inside a
#if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
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Missing Telerik files in project\obj upon window store app package creation

I've been working on an UWP app with a Telerik RadDataGrid component on it. It builds fine in debug and release mode. However, when building the windows store app package the process fails with the following reason:
ErrorFor file "C:\Projects\CompanyAppClient10\obj\x64\Debug\PackageLayout\Telerik.UI.Xaml.Grid.UWP\Assets\FilterFlyout\ic_arrow_down_white.scale-140.png" -
0x80070003 - The system cannot find the path specified.CompanyAppClient10 C:\Projects\CompanyAppClient10\MakeAppx
What could be the cause of this?
I've already tried creating a new clean UWP application with only a RadDataGrid component on MainPage.xaml. This results in the same error as above.
I've also repaired my Telerik UWP installation. Makes no difference.
Installing the newer update fixes it.
Alternatively you can use the following workaround -- copy the entire folder
C:\Program Files (x86)\Telerik\UI for Universal Windows Platform Q2 2016\Binaries\Telerik.UI.Xaml.Grid.UWP\Assets\FilterFlyout
into
C:\Program Files (x86)\Telerik\UI for Universal Windows Platform Q2 2016\SDKs\Telerik UI for Universal Windows Platform\Redist\CommonConfiguration\neutral\Telerik.UI.Xaml.Grid.UWP\Assets
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First i got this exception
Error 1 Error : DEP6810 : MdilXapCompile.exe failed with error code 1004. See log file '~project.WinPhone\obj\Release\MDIL\MDILXapCompileLog.txt' for more details.
in this file there was an error
Compile filter argument specified non-existent file: ~project.WinPhone\obj\Release\MSIL\nl-NL\project.resources.dll
Invalid argument
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But when deploying the application in this state it crashed immediately. with the native debugger i could get it to break. it gave me this exception
Unhandled exception at 0x775E062F (COMBASE.DLL) in project.WinPhone.exe: 0xC000027B: An application-internal exception has occurred (parameters: 0x04F80AB8, 0x00000006).
Clicking on the Disassembly it had it's pointer on this line
77808534 bl SignalStartWerSvc (777FED78h)
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Has anyone ever had this sort of issue before and does anyone know how to solve it? It is keeping me from placing a working application on the app store, which is really frustrating.
Thank you in advance

How do I successfully add RealmSwift to Xcode?

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I have downloaded the Swift version of Realm and dragged the framework to Xcode correctly.
I have set the Framework search paths to point to the new framework.
On trying to run, Xcode trips up with a code sign error, exit code 1.
I have not added anything else to a standard Xcode template / Cocoa (non-document) application using Swift and storyboards - its just a bog-standard appDelegate Xcode template at the moment without any added code other than the Realm framework. I have searched endlessly around SO and across the internet in general but most help out there concentrates on iOS.
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The error log looks like this:
Warning: usage of --preserve-metadata with option "resource-rules"
(deprecated in Mac OS X >= 10.10)!
/Users/bobavery/Library/Developer/Xcode/DerivedData/RealmTest-hffxikloaikapxcsotbcfqpezrba/Build/Products/Debug/RealmTest.app/Contents/Frameworks/RealmSwift.framework/Versions/A:
code object is not signed at all In subcomponent:
/Users/bobavery/Library/Developer/Xcode/DerivedData/RealmTest-hffxikloaikapxcsotbcfqpezrba/Build/Products/Debug/RealmTest.app/Contents/Frameworks/RealmSwift.framework/Versions/A/Frameworks/Realm.framework
Command /usr/bin/codesign failed with exit code 1
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