I recently rebuilt my PC and installed Win 7 Pro (64 bit), and returned to playing GC2 DL. I couldn't find disk 1 of the original disks, so downloaded from Impulse. After the initial install, I played for a couple of weeks but then started getting an error "There is no disk in the drive. Please insert a disk into drive D:.", and after quitting the game it then wouldn't let me get past that message at all. Uninstalled/reinstalled, worked for a few days and then started the disk message again. debug.err is empty.

Thanks for any sugestions.