I backed up gladius using DVD Decrypter on to a RiDisc (Ritek). I use a flip top so I changed the disc over when asked. The DVD boots but then the menu screen where you select the memory card or the DVD disc comes up. The playstation says its a ps2 disc in the machine but everytime I select the disc and after a short pause it always comes back to the same screen, memory card or disc option. Do I need something else on the Disc or have I done something wrong greatfully of any help.