playstation allstars battle royale problem!!!

hi guys,

am trying to run the above game and have encountered a problem with it running.i load game up using multiman and change none of the game settings.game loads up fine but after i select a character and get ready to start game all i get i a black screen and it hangs there.tried it with internal and bd mirror enabled same thing.i have tried with both a disc in the drive and without.any idea's please?

p.s i am on the latest rogero cfw.