I can get a bunch of other roms to work with covers and they work very well. NES, Genesis, GBA, GameGear etc. but I have tried 5 different rom packs from no-intro and other reputable rom packs and they scan just fine, but as soon as I add a box art folder (from libretro). when I scroll onto the 2600 icon the console freezes. the art works perfectly fine for the other rom consoles.
Any Ideas?