Error in Microsoft Visual Studio 2012 :No exports were found that match the constraint

Question

When I opened my Project in VS2012 , I got an error

No exports were found that match the constraint:

ContractName
Microsoft.VisualStudio.Utilit

Answer 1

I solved this problem by clearing the Visual Studio Component Model Cache. Just delete or rename this folder:

%AppData%\..\Local\Microsoft\VisualStudio\11.0\ComponentModelCache

Or, for Visual Studio 2013:

%AppData%\..\Local\Microsoft\VisualStudio\12.0\ComponentModelCache