Hello guys,
I’m also struggling with MAME roms, no one is working. After I start a game in Emulation Station, it’s kicking me back to the game list.

I created a roms folder in the mame4all-pi folder and changed the es-Systems.cfg as trimmtrabb suggested – but nothing is working.

I’m wondering what I have to change in my RetroPie config to get MAME running.

Other emulators are working great! Thanks for sharing this great project with us!

I’m so thankful for every help!!