[Joe Ross]

Is there a stack trace in the output in netbeans? It may scroll off the screen quickly, so be sure to scroll back and look for it.

One common problem that would only manifest itself when everything is combined is trying to allocate the same hardware twice (for example using PWM 1 in both Shoot and Grab. If you want more specific suggestions, you'll have to post your code.

Not related to this problem, but you should not put any explicit delay in any of the periodic methods.