I have deleted the file "listinfo.dat" then restarted gameex and updated the list, now with mame32UI everything work, all game are present and playable. So I decided to switch to vanilla mame in the gameex configuration (just changed the path to the .exe), I've deleted the "listinfo.dat" again, but when I update the list in gameex there is no game! (there is no new "listinfo.dat" into my mame directory when I go back to windows also) This drive me crazy! Have you any idea of the thing I am missing?