When the EditorPackage does not load correctly

Something must have changed with the Windows updates and it was enough to cause an issue. This problem seems happens enough with various versions of Visual Studio that you can bingle it and get the same answer.  You need to clear the ComponentModelCache folder.  For Visual Studio 2013, it’s located in the %LOCALAPPDATA%\Microsoft\VisualStudio\12.0 folder.


I renamed ComponentModelCache to ComponentModelCache.Borked and restarted Visual Studio.  It started right up and without any errors.








Source :
http://www.rajapet.com/2014/02/when-the-editorpackage-does-not-load-correctly.html