Started a new Forms-project some days ago, and I have quite some warnings about
Warning 21 Application references a .NET FX assembly C:\Windows\Microsoft.Net\assembly\GAC_MSIL\Microsoft.CSharp\v4.0_4.0.0.0__b03f5f7f11d50a3a\Microsoft.CSharp.dll. It will not be uploaded to the build server. MyApp.iOS
All builds and runs fine, but those warnings are clogging up the real warnings...
How to clean them up (and how to prevent them in the future)?
Environment: VS2012, Win7 (no Windows phone project).