hi, hope someone can help

i did everything listed in the original post, im using the stock kernel, i check the ko and it is already dev.bdvd, anyway i backed up uncharted 2 but when i try and play it i get this message

"to play this game, you must insert the following disc. insert the disc, and then start the game again" (8001003E)

im not sure whats wrong, im using the original backup manager that the OP posted