Mike-
I was lucky enough to be able to download the OS 9.1 update... Installation went off without a hitch, aside from one issue that I have noted so far. My mouse no longer works within the game Rune. I have a G4/500MP with both the Apple Pro Mouse and a Kensington TurboBall, neither of which work in Rune anymore...
The keyboard still functions, and the mice return to operability in the Finder when I quit Rune. It isn't anything that was changed in Rune itself (I tried fresh .iniÃs and everything). I'm going to see what I can do to track down the culprit and resolve the issue...

[He later wrote]

Here's an update on the previous situation... Still no luck figuring out the problem! My first inclination was that it was something to do with GameSprockets, so I reinstalled from the 1.7.5 smi file. Only one file had a different version number, and made no difference. Next, I tried reinstalling OpenGL 1.2.1 from it's smi. Still no luck. Next, I tried removing the updated Carbon Lib and reverting to 1.0.4. No luck. I'm not sure where to go from here, but I definitely need to fix this. Since Rune uses the same engine as Unreal Tournament, I thought I had better check to see if the problem existed with UT. It does. Hm... If it matters, the video card in the machine is the OEM Radeon.

[And finally wrote]

Okay! Everything works again... At least as far as games go. The problem was not that I needed an earlier version of a file, but rather I needed to remove a newer file. The culprit was the USB Device Extension (v1.4.6), which when removed, allowed everything to return to normal. I don't know if this is a new file that was never part of the Apple USB package before, or if I just didn't have it previously installed for some reason.
-Jarod Wilson "