So, I'm positive I'm doing something wrong here, but maybe someone can help me. I've got MAME 0.181b and a 0.181 updated romset (A .161 full set with each update pack up to .181). Regardless, very few games are working. I've got some experience with MAME and setting up directories and I'm 100% positive it's not an issue on that front. The ROMs are there, they're non-CHD games, but they just aren't reading. I've not heard anything about this version being highly incompatible but it may be something I missed.