@sleve_mcdichael yes, that was an error on my part - I am accessing the SD card on another computer with Linux Reader and have to manually copy it across.

But I discovered something new: if I play a game, hotkey + Y, and set the overlay there, I can save the game config in the overrides section. This only works when assigning an overlay to a single game at a time, not a system via global override.

@flagrant99 said in retroarch.cfg:

and yeah STAY AWAY FROM #'s keys.

Not true. I have SELECT and START for four players all mapped to numbers on a keyboard and this works just fine. These are MAME defaults, after all. However, if you pay attention to the allowed values commented in the default retroarch.cfg file, you see that you have to specify numbers as "num1", "num2", etc. not "1", "2", and so on.