go into multiman, hover over the game and hit square. tick internal game data, tick BD Mirror. Then Quit Multiman, go into your Debug setting is your running DEX and scroll down to Boot Mode: Change your boot mode from System Software Mode to Release Mode. Restart your ps3 and load Gta 5 and you shouldn't have any problems. If you want to RTM with Tmapi, go back to your Debug Settings and change Boot Mode back to System Software Mode and restart your ps3.