Cannot convert source type “MyType” to target type “MyType”

I recently installed ReSharper!. Today I was working on getting some old, previously ignored Unit Tests to pass for my current project. All of a sudden I noticed a nasty red squiggly underline on my actual = target.MethodUnderTest(input); call. Hovering over the offending code produced an error along these lines: Cannot convert source type Very.long.namespace.and.project.name.MyClass […]