Thank you so much! Creating a separate Mame emulator with the check boxes removed was the final solution for me to get it working. I really appreciate your help! Pretty excited to get this last piece in place. Also, here's an update. Now that I have the games working, I tried both a CHD version as well as the original ISO / CUE files and both worked! In fact, I was able to have it use a zipped up version of the ISO/CUE files with no problem by going back and selecting the extract rom before running option. ?