Hey I'm having the same issue in .177... even from downloading the program directly and trying it immediately before modifying anything... it works on an old version I have (165)... not sure what you mean by ini files being set up properly... I checked everything against the old version and it appears the same. I also tried pointing directly to the cfg file for the controller I want to use using the mame.ini file under input options and still nothing. Please help, thanks!!
EDIT: It looks like a bug... 177 32 bit works... 176 64 doesn't, although 175 64 bit it works as well.
Edited by theperm (09/23/16 06:30 AM)