Learning curve is huge here. I am making some progress though. I think the Nestopia emulator is corrupted. I have downloaded another Nestopia and 1 game and can run both from a jump drive in the arcade cabinet computer. So I am thinking I need to remove and reinstall Nestopia.
I see a place in preferences where it runs a scan. I run it but it doesn't change or fix anything that I have seen. Anybody willing to chime in? I'll buy you a beer if you're ever in San Antonio!