We've just posted the updated files for ArtRage 2.2.9 Full Edition on OS X. This update fixes three problems with the 2.2.8 release:

1. The eraser tip on the top of a tablet stylus should now work again.

2. The tick mark in the automatic update check Preferences menu item should now be ticked correctly when the feature is active.

3. Some problems with G3 processor compatibility have been solved.

The auto updater can be used to download and install the latest version if you're an OSX user.

For more details on the feature set of ArtRage 2.2, please see this thread: ArtRage 2.2 Released..