I am having the same issue, cannot get my games to run. MAME 208 and the same MAME ROM set from Pleasure Dome. I did the rom import, in launchbox, it took like 8 hours and no games will load. It was my understanding that since I used the non-merged set those zip files would have all of the game data in each. No CHD files need? I am obviously missing something. But, I have bunch of time in the mame issues. I even used Romvault and all the roms were green. I am able to get other platforms/emulators to work. Any help would be appreciated. Thanks.