When loading quickstart samples that were compiled with earlier Whidbey betas but use v1.1 framework libraries you will receive an error message that the CSharp.Targets file cannot be found and the project will not load. The CSharp.Targets file has been renamed between earlier Beta releases and Beta 2 of Visual Studio. Look for the file as Microsoft.CSharp.targets in the Windows\Microsoft.NET\Framework\v2.0.50215 directory. Simply update the filename of the targets file from CSharp.Targets to Microsoft.CSharp.Targets in the .csproj file.