Strong Name Validation Failed while running C# app in custom AppDomain from unit test

I have a program that make use of unmanaged C++ code, and I want to write Unit Tests (well, more like system tests) for it.

I want to run the entire program from the Unit Test in a different AppDomain, so I'll be able to more easily inject tester code.

Problem is, when I try to run it, I get this error:

The C++ module failed to load while attempting to initialize the default appdomain
(source: my own code)

Inner Exception:

Strong name validation failed. (Exception from HRESULT: 0x8013141A)
(source: msvcm90)

I use the MSTest as testing environment.

I already tried altering some app.config files, but maybe the wrong ones. I also tried using the AppDomainSetup object, but I don't know what to configure there to prevent it from performing strong name check.

I'm launching the app from the unit test using AppDomain.ExecuteAssembly.