Ya I tried it and neo geo game's till play funny.
Sounds like it wasn't set up completely.
Put the xarcade.cfg file into the ctrlr folder in the mame folder.
Start mameUI, go to the options, default game options, controllers, default input layout, and select xarcade. Apply and okay.
(I'm assuming you didn't change the default ctrlr path, aka options, directories, controller files is still set to "
ctrlr".)