I had the same problem with my NES Gamepad config.
I used every option i can find to remap the buttons A and B but if i reload the NES system my controller config doesnt work.
The eumulator says the same "remap file loaded" but nothing happens.
@zing Thanks! Did both those things, copied unicode.pf2 and added the insmod all_video line to my menu entry, worked only in combination with starting it in verbose, had tried insmod all_video yesterday quickly but it didn't work because of that.
in the menu, sometimes it would hang for few seconds (no possibility to go up or down or push any button).
some times i press a button or a direction on the pad nad it crashes and displays a black screen with "Loading REcalbox" which never ends.
I never had that with the previsou version. I tried two different usb keys with fresh install on two different computers.