Windows : Blu-rays won't play but they did recently!

[MarcLister]

I've got Windows 7 x64, PowerDVD9 and Bourne trilogy on Blu-ray. I had watched the Bourne Supremacy in the last week (after W7 install) so I put Bourne Ultimatum in tonight to watch that. It didn't work. PowerDVD9 would "load" the disc but somewhere between 71 and 84% each time PowerDVD9 will just crash. I've no idea why. It seems to vary each time I try loading a Bourne film but it is between 71 and 84% roughly. I've restarted my PC but that didn't help.

I thought it was the Blu-ray bit of PowerDVD9 that was broken but I've worked out that Sin City and Kiss Kiss Bang Bang (Blu-ray versions) both playback so why do the Bourne trilogy Blu-rays not work? :mad:

Any ideas? I was thinking of reinstalling PowerDVD9 but if Sin City and Kiss Kiss Bang Bang both play in Blu-ray format on PowerDVD9 is there any point? Or is there something about the Bourne discs that needs something special from PowerDVD9 which could have become borked and a reinstall could be a good thing?