Visual Studio 2015 crash when opening solutions as administrator

1. Open VS 2015 as administrator
2. Open a solution
3. Projects in solution are listed with status Initializing, then suddenly VS crash.

Everything works as normal when NOT running as administrator

Tried: - Disable all extensions - Run VS in /safemode /log - Examine ActivityLog.XML, but nothing special in there - Debug crashing VS gives me:

System.Runtime.InteropServices.COMException was unhandled Message: An unhandled exception of type 'System.Runtime.InteropServices.COMException' occurred in mscorlib.dll Additional information: Error loading type library/DLL. (Exception from HRESULT: 0x80029C4A (TYPE_E_CANTLOADLIBRARY))

There is no more information, I have no idea about what library causes this. Any suggestions???

EDIT: It is probably related to a failed uninstall of VS 2013 yesterday. Although strange that the two versions affect each other in that way. My next move will be to try a repair of VS 2015.

Repair of VS 2015 fixed the issue and even allowed 2013 to be successfully uninstalled.