OK, I put in a Simpsons DVD for my 8 year old, watched while it started playing - regional warnings, etc, then popped out the back. A few minutes later my daughter calls me in, DVD isn't working. According to her (and I don't think she did anything to it) it suddenly stopped and 'Unable to read disk' or something came up on the screen. She ejected the DVD and put it back in again after wiping it (she's pretty savvy about these things), it then reported 'Incorrect disk'. That's when she called me in, and I couldn't get the Simpsons DVD or any other DVD to play, they all come up 'Incorrect disk'. Anybody know what's going on? Does the player just need cleaning, or has it clapped out?