I have downloaded and installed Mame and pulled in a few games. Everything shows up and acts like it is all good but when I attempt to run the games the screen just flashes up and goes away. I found the debug log option and enabled that... all I get is a bunch of messages that appear to be checking controllers and such and then it increments the played counter for said game and then logs a few more messages. I can probably grab some lines if that helps... I'm probably too old to be attempting to make this arcade but I'm just trying a small test at this point to make sure I understand what/how all this works.
Anything more I can check?