Please help, cant debug

In unit testing our windows applicaiton, there is a circumstance where our application crashes with the

"has encountered a problem and needs to close. We are sorry for the inconvenience."

It does not stop at any of our code, it just crashes - so we cant debug to find the problem.

Can anyone give us any suggestions to help us find the problem

Here is the error signature:

Any help at all is appreciated,

Thank,

Eric