I wouldn't think so in this case as GameEx is just passing along the command-line. Testing from the command-line is what needs to be done from the OP. Users saying the classic, "It works outside of GameEx" is basically untrue. Perhaps from the GUI yes but from the command-line, obviously not. So I suggest testing outside of GameEx from the command-line to troubleshoot. Final step would be that I'd be willing to help remotely as I do this with some of our users already. I know other members that have offered this in the past as well. Then we can narrow it down more quickly. Good luck and let us know the results or if you want remote assistance.