I am having all manner of problems with Harry Potter COS in my Toshiba 2109. It's definitely a player issue, because it's happened with two different discs. When I insert the DVD, the pre-menu sequence comes up, then the menu locks up. I have to turn the player off. When I turn it back on, the pre-menu sequence comes up again, and I can select "play movie" when the menu comes up. However, the sound starts dropping out intermittently almost immediately. What's interesting is that I've never had a compatibility issue before, and I've watched a lot of DVDs on that player. Is it time to step up to a new player?