I have uninstalled all Visual Studio components and reinstalled Visual Studio 2013 plus Visual Studio 2013 SDK.
I started having the problem before I uninstalled Visual Studio, but now I am at a loss since I still have it.
If I try and open any file in the solution, I get 'Unrecognized Guid Format' and I can't seem to find anything when I Google for it.
Is this a known issue? I could have swarn I had this before, but now I can't find the solution.
All the projects in my solution are Dot Net Framework 4.5, but I opened up a simple project, and it didn't work either.
What can I do if reinstalling doesn't fix?