Private static members missing

I have a static class that I have mocked a method on, and am also calling a method normally on. The called method goes along just fine until it hits a private member variable. Why are the rest of the methods and properties working fine, but not the member variables?

I have tried moving the instantiation of the vars to be at the declaration, and also inside the constructor. Again, everything here is static(if that makes any difference).

I have also tried debugging, but it appears that the mocks don't take effect when being debugged, because everything works like normal, and expectations don't get verified.

This is all in .net 2.0, vsnet2005, TypeMock 4.1.0 eval. Any help would be appreciated.

Thanks,
Steve