I'm receiving the following error when trying to build a silverlight 4 project. I assumed this was explicitly not supported at this time since there was a uservoice item requesting it, but @troethom requested more details on twitter :-) The error I'm receiving is below:

C:\Users\Administrator\AppData\Local\Temp\2\3wo04dmr.elw\input\SRPG.App\SRPG.App.csproj(93,3): error MSB4019: The imported project "C:\Program Files\MSBuild\Microsoft\Silverlight\v4.0\Microsoft.Silverlight.CSharp.targets" was not found. Confirm that the path in the declaration is correct, and that the file exists on disk. Done building project "SRPG.App.csproj" -- FAILED. __________________________________________________ Project "C:\Users\Administrator\AppData\Local\Temp\2\3wo04dmr.elw\input\SRPG.sln" is building "C:\Users\Administrator\AppData\Local\Temp\2\3wo04dmr.elw\input\SRPG.Server\SRPG.Server.csproj" (default targets): C:\Users\Administrator\AppData\Local\Temp\2\3wo04dmr.elw\input\SRPG.App\SRPG.App.csproj(93,3): error MSB4019: The imported project "C:\Program Files\MSBuild\Microsoft\Silverlight\v4.0\Microsoft.Silverlight.CSharp.targets" was not found. Confirm that the path in the declaration is correct, and that the file exists on disk. 0 Warning(s) 1 Error(s) Time Elapsed 00:00:00.67