I had the same problem and tried to reload Power DVD9 Ultra. My problem though was, I could play my own pre-made BlueRay disc's from the folder(mts2) but not any(tried 5) store bought BlueRay from a folder. Of course it would not play at all from the disc by itself automatically.
It would play a standard DVD just fine and automatically.
The very first time I installed PowerDVD 9 Ultra, I was able to install the 1719 build update. Since reinstalling PowerDVD 9 Ultra as instructed by Cyberlink, I haven't been able to install this update. It fails nearly all the way through it, with error code 1403. I contacted Cyberlink and they sent me instructions to eliminate Power DVD 9 Ultra along with registry file deletions and then reinstall however with many, about 15 attempts, the 1719 build update still errors. Cyberlink says to keep trying the install regardless. I am trying but no luck yet.
My machine:
A really cool Coolermaster case
750 watt PS
AMD x2 64 5600+ running at 2.9 Mhz
Biostar TA790GXB A2+ 6.x
8 gig memory 800 mhz
5 SATA 2 WD 750 gig 32 mb cache hard drives
(4 hard drives in RAID 1+0, speeds of 130 to
230 mb/s on Intensity Pro speed tester)
(the fifth drive on RAID 0)
Vista Ultimate 64 bit
1 HD 4890 ATI video card turned up all the way
1 Black Magic Intensity Pro card
BluRay and standard DVD recorders.