@8trek I think you may want to slow things down a bit. Most of the people who help others in this forum do so with their free time. You may not get replies right away. Also, if you do too much at one time, volunteers may not be able to keep up.
If you want to try things on your own, that's great. It is one way to learn about the programs and how they interact; but, if you are asking for some direction, stop your own troubleshooting, give feedback, answer questions, etc so the volunteers can be on the same page as you. It us a slower process, but I think its the best way to do it via posting.
BTW, it is too early to guess that there could be a GameEx/Mame compatibility problem. Those types of things do not crop up very often and when they do, they are usually easy to replicate. Not enough troubleshooting has happened in this thread yet.