@BuZz ooops sorry my bad.

@unspacey To put it another way, by changing the "setting" as you describe it to use 2003, what you are doing is telling RetroPie which version of MAME you want to use. To succeed, the game you are launching must be a ROM from the version .78 set.

@pjft MACs aren't my thing, I leave them to the GF and the young wan. Everyone I see talks about dd In fact I saw etcher get ripped to shreds on reddit by people criticising them for just over-complicating dd. Saying that, I do like a nice GUI and I have no issues with it. Straight into a zip? You could ask them to add it. They seem like they are willing to help.

I think there is mednafen available for install on RetroPie, but I could be dreaming or it is not available anymore. But for what I am aware, at least until some time ago, it didn't have Open GLES support, so it will run much slower than the available emulators. I have to update my RPi installs to check it, since i am still running RetroPie version 3 :D PS: Yes, they are available, with the name lr-beetle****

Well, I change from the theme SIMPLE to CARBON. No more problem. I made my new NES thems for the ROMs Hack and it works fine! Thanks you all!

@PopetheRevXXVIII which emulator are you using for nes? Fceumm cuts off on both sides on every game. Nestopia displays correctly.