Canon scanner (Canoscan 8600F series) will not work after OS upgrade.
I used the scanner when when it was 10.6 just fine and 10.7 but as soon as I upgraded it to 10.8, it wouldn't. Officially the website supports up to 10.6. I don't know how it worked on 10.7. Now, it doesn't even recognize the scanner.
One thing was I did wipe out the drive and re-install the OS because OS upgrades would perform better. Trying to re-installing the older drivers don't help.
MBP 2010 15, Mac OS X (10.6.7), PowerBook G4 15" 1.67G