Hi, new here and have just installed gameex and experiencing the same problem. I checked the logs and everything seems fine. Roms, snaps etc show up fine in gameex. I'm using net 1.1 and have never installed 2.0 so I don't think its that. I think the problem is in launching MAME using CMD. I duplicated using start-Run the CMD line used by gameex (got it from the logfile) This was the original and did not work cmd.exe /c c: c:\mame32\mame32fxpp.exe 1941 -rompath c:\mame32\roms This worked though... cmd.exe /c c:\mame32\mame32fxpp.exe 1941 -rompath c:\mame32\roms Note that simply deleting the c: made it work? This also worked...(adding a couple of advanced option switches) cmd.exe /c c:\mame32\mame32fxpp.exe 1941 -rompath c:\mame32\roms -nowindow -joy Hope this helps...the gameex FE looks great and can;twait to see it in action...