Problems playing blu-ray combo discs

I recently bought an LG Blu-ray drive for my old HTPC, and so far everything works great. Except for District 9.

I understand it's a combo disc that features the God of War III game demo. I'm wondering if it's interfering with playback. Basically, I pop the disc into my drive, and it tells me that there's an unsupported disc in there.

I'm running:

Windows XP
AMD X2 4200+
2GB RAM
LG Super-multi Blu-ray drive
ATI Radeon HD 4670 1GB
PowerDVD 9 Ultra

I just updated the drive's firmware (ver.1 to ver.2) with a patch directly from LG's website.

No go.

I'm still getting the same error message (unsupported disc in drive). Any other thoughts? I appreciate the help!

Yes, I've tried using AnyDVD HD and still the same. It tells me there's an unsupported disc format in the drive. I thought it was maybe just a bad disc I had, but I popped it in someone's standalone blu-ray player and it plays fine.

Yes, I've tried playing the disc by opening PowerDVD first, then inserting the disc. No change. I'm also running the latest version of AnyDVD HD, however it's a trial version I downloaded from their website. Also, I don't know if it's a copy-protection issue, or if it's an issue with the PS3 game files being on the disc.

And I'm curious, what make/model blu-ray drive are you using?