I seem to have an issue with the roms I have in my collection. I have say 3500 roms and only about 2000 show up in my mame executable. I have a program called romcenter which seems to be helping me to get them working, although it does take a while to scan them all. When I loaded up mala frontend though, I only have about 1000 of them roms showing up in the list. I'm wondering if mala gets confused as to what it deems "working" roms, as I have a filter on my mala options to show only roms I have, and only ones which work. I'm using 0.139 I think