STAR TREK also worked fine for me. Sounds like a disc problem. Great release of an amazing film, by the way.
The only real hassles I've run into with the BD-P1500, outside of the awful loading times that seem to be a "feature" of Blu-Ray players, occurred when I was forced to switch the player over to an old 27" Sony Wega CRT. It was the result of my 42" Samsung Plasma deciding to get a lovely, thick, black vertical line down one side of it. I'm so glad that this problem can be fixed by simply replacing the ENTIRE DISPLAY PANEL so that pesky things like repairs don't have to be dealt with. Bitter much? Me? Yup. The current economy means I don't have the money to even consider replacing my HDTV for a long while. That's neither here nor there. Sorry for the diversion.
Now, when I update the firmware or reset the settings, I have to make sure to hook the player up using composite cables, else it automatically defaults to 480p. I panicked the first time this happened, until I figured out the workaround. Once I'm using composite cables, I can enter the menus and tell it to default to 480i. Then I can hook it up again using component cables and all is well. Sort of. It still starts up in 480p mode initially, before switching over to 480i after six-or-seven seconds. It's a minor hassle for me, but I'm sure that anyone who is forced to use an old SD television and isn't quite as well-versed in video tech as I am would assume the player was broken. Also, and this is primarily the fault of the content providers, watching an older 4:3 film is frustrating, because there is no way to set it to zoom the picture in to fill up my screen. It's like watching a tiny TV inside my TV. I know that it's only a problem for those of us who are stuck using the player on older sets, but it's still a problem. Again, I realize that the content is encoded that way on the actual BD discs, but it would have been nice to have some sort of zoom feature on the machine to eliminate the pillar boxing.
Other than that, I haven't had any problems playing any discs as long as I'm on the latest firmware.