it means your cd is farked or you dont have your cd plugin configured correctly. try petes cd plugin and auto configure.
as for psx cds, generally you should be able to play them directly off the original game cd. you may have better performance if you wish to play from an ISO image on your harddrive.
as for psx cds, generally you should be able to play them directly off the original game cd. you may have better performance if you wish to play from an ISO image on your harddrive.
