It's annoying as all get out! I just defeated the massive boss, got the rope ascender, and obviously you have to swing the crate over so it can drop through the floor. The problem is the graphic glitch where the crate stays in place, the crane moves and the rope eventually snaps leaving the crate in place and not moving. Reloaded the checkpoint about 900 times (ok a lot) and it never corrects. A lot of people with 360s are having this issue. This is a major suck for what was a good game, and has now ruined the game for me as no update has been released.