Thanks, David.

Obviously you can't predict this, but I if I upgrade all seasons to version 9, will I have to do the same when Version 10 comes out?

I have quite a few discs, so even at $5 a pop, this is essentially a deal-breaker for continuing with the game. I have about 50 discs, mostly version 8, so I simply can't pump that amount of money into the same data again. I know it's mostly Microsoft's fault, but this is akin to buying the same music on album, tape, and then CD. There comes a point when you have to call it a day...

It seems odd that no one else has complained about this -- guess I'm the only one unfortunate enough to have both version 8 discs AND 64-bit Vista...