[DavidPabian]

Thanks for your suggestion on VersionTracker.com, MrTew - Simple reinstalling did nothing, but I saw on your post there that when the update asked for a restart was when you were tipped off to the solution. I trashed my ATI utilities folder and reinstalled update (also chose a specific folder for installation, rather than simply the default OS X disk). It asked for a restart - first time in four installations - and Aquarium looks fine! ATI should suggest deleting application software before updating. Thanks for your help and suggestions, guys!