I had a problem with this disc and the RP56(my JVC plays it fine). I tried it 3 or 4 times and had the same problems. 1) at the end of chapter 8 the players skips forward about 2 minutes into chapter 9. 2)About half way through chapter 9 (right around the the scene where they are discussing the metal implanted into Wolverine)the play go back to the the scene where the senator is leaving the news conference to get aboard the helicopter. Has anyone else had this? Is this a problem between the 56 and the X-men or is the 56 unit I have defective? Any input is appreciated?