复制的项目错误Visual Studio 2012

Question

I copied a whole project one file at a time and changed the files to fit to the new project as the errors piled up. All the errors rectified but now it says project item unavailable. I never seen this error before.

Here is the error:

I exchanged a settings file and now there is a new error:

Answer 1

This was a comment: Try restarting visual studio if you havent already. Sometimes that does the trick magically.