I've recently taken my RPi B+ card, inserted that into a RPi 2 and got it working with new updates etc.

However, neither AdvMAME or MAME4ALL appears on the menu. If I press the "Install MAME" button sometime during the installation of MAME4ALL it says that a directory cannot be created, because it already exists (This might be the cause?)

I am mostly interested in getting MAME4ALL working... I only have roms for that emulator :)