Game or BlueRay defective.

Game is broken, the game constantly breaks in between and displays the error message, the disc can not be read, it just breaks off and you have to start the game the first time and thus always end up at the last save point.
Although the disc is totally clean occurs a read error. ??? (It's not my PS3, all other games run without
Problems.) Exchange and does not go so well thus only remains for me the opportunity to give vent to my displeasure.
Sorry I'm sorry but for this reason this Bewehrtung.
LG Uwe