I have ran into so many issues with these rom set. It's really the fault of all these rom sites not listing the games or sets correctly or having different bios versions that work with different games and sets. It is very confusing.

I did it the sucker way by changing out roms and bios till I got most working.

Sorry about this but i made a wee boo boo with the clockspeed in the above post, i've sorted it now on the git

I believe I have resolved this issue for people updating - but those already with a broken fba/emulators.cfg - can delete the config, and re-install the emulators again which will restore it (same for the arcade/emulators.cfg if that is being used)