Why does Visual Studio 2015 Designer crash with "Designer process terminated unexpectedly"?

Question

Does anyone know how to debug this? No matter what I do, I can't use Visual Studio 2015 Designer or Blend 2015. Both are coming up with this error:

Everything compiles and runs smoothly, but the designer doesn't work. I don't even know what System.Runtime.Remoting.RemotingException means.

Answer 1

Ok. Figure it out. I hope this helps someone in the future.

The culprit was the Any CPU platform selection. When you select x86 or x64, everything works :)