The type or namespace could not be found

Question

I\'m currently trying to convert a WiX 3.5 custom actions project in Visual Studio 2008 to WiX 3.7 and Visual Studio 2012 and I\'m getting the following exception:

Answer 1

This may be completely unrelated but I had a similar issue yesterday. I had accidentally copied a class file (.cs) from one solution into another solution. Clearly, I hadn't added the references to the other solutions.