What could be causing a System.TypeLoadException in a Visual Studio Unit Test?

Question

I\'ve got a C# .NET class library MyClassLibrary that compiles fine. I\'m trying to create a unit test project for it (using Visual Studio Unit Testing Fram

Answer 1

This happened to me as well. I had a nuget package installed on my domain project with version 1.5, but only had version 1.1 on my unit test project. I resolved the issue by updating the version on the unit test project to match the version on the domain project (the project being tested against).