After the upgrade, when build, a warning pops up saying:
The primary reference "Elegant.Ui.Ribbon, Version=3.5.0.0, Culture=neutral, PublicKeyToken=3a2b400713aae6e0, processorArchitecture=MSIL" could not be resolved because it has an indirect dependency on the .NET Framework assembly "mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" which has a higher version "4.0.0.0" than the version "2.0.0.0" in the current target framework. PDFFlowline.VS2010
How so? And how to fix it. This project compiles fine on VS2008. I'm running Windows 7 and VS2010 and both of them have the latest updates installed.