Receiving EXC_Breakpoint error before running code

I'm working on some Xcode Testing. When I run one of our tests, I'm reciving a "EXC_Breakpoint" Error message before the test has begun execution. It's difficult to debug with beakpoints as the error occure before running any code. I have a feeling it has someting to do with my Xcode setting but can't seem to find the answer.

Has this happened to anyone else? The last line that we recevie from the output is:

fatal error: unexpectedly found nil while unwrapping an Optional value (lldb)

Thanks! :)