Sony Blu-Ray plays some Disney titles...but not others.

[emkoss]

I just bought a Sony VAIO VGN-FZ283BN Laptop with a Blu-Ray Drive. It's loaded with InterVideo WinDVD BD for VAIO. I think it's version 8, but not sure which revision of 8 it is. After going through all the standard initial challenges - region, enabling a single monitor while using Vista, etc., I'm finding that I can play some movies and not others.

I got Ratatouille to play, but for the life of me cannot get Spiderman 3 to play. I actually thought it was the DVD and returned it for a replacement. I can play the Special Features disc, but not the actual movie.

I've searched the web and didn't much help for the Sony laptops. I checked the Sony site and it seems at least one of the VAIO laptops has a patch for the InterVideo WinDVD for VAIO that solves playing problems. But, it's not listed as a patch for mine so I'm hesitant to install it. Also because I'm pretty sure my laptop is newer than the other one.

Any suggestions?

Thank you.