Looks like MSVS 11.0 Beta spoiled a MSVS 10.0 installation

I ran into compilation problems with my MSVS 10 after installing MSVS 11Beta. Now, when I compiling my C# Projects in MSVS 10 (Projects created in MSVS 10; Target framework: 3.5), I've got such an errors with following text in output window:

1>Task "GenerateResource" skipped, due to false condition; ('%(EmbeddedResource.Type)' == 'Resx' and '%(EmbeddedResource.GenerateResource)' != 'false' and '$(GenerateResourceMSBuildRuntime)' != 'CLR2') was evaluated as ('Resx' == 'Resx' and '' != 'false' and 'CLR2' != 'CLR2').
 1>Task "GenerateResource"
 1>  Launching task "GenerateResource" from assembly "Microsoft.Build.Tasks.v3.5, Version=3.5.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" in an external task host with a runtime of "CLR2" and a process architecture of "x86".
 1>C:\Windows\Microsoft.NET\Framework\v4.0.30319\Microsoft.Common.targets(2199,5): error MSB4216: Could not run the "GenerateResource" task because we could not create or connect to a task host with runtime "CLR2" and architecture "x86".  Please ensure that (1) the requested runtime and/or architecture are available on the machine, and (2) that the required executable "C:\Program Files (x86)\Microsoft SDKs\Windows\v8.0A\bin\NetFX 4.0 Tools\MSBuildTaskHost.exe" exists.
 1>C:\Windows\Microsoft.NET\Framework\v4.0.30319\Microsoft.Common.targets(2217,7): error MSB4028: The "GenerateResource" task's outputs could not be retrieved from the "FilesWritten" parameter. Object does not match target type.
 1>Done executing task "GenerateResource" -- FAILED.
 

How can I rid of these errors?

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