I did, however, discover another funny little error message, this time in the Finder. I use a great free utility called QuickAccessCM, from Abracode, which allows you to copy or move files to commonly used, user-defined folders in a contextual menu popup. I use it for organizing all the downloads that get dropped onto my Desktop, for instance. Just right-click any recent files and send them off to the appropriate download folder, without ever having to drill down to said folder. It's nice and handy, for me anyway.
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So what happened was, I was copying something from the Applications folder, only I accidentally told Quick Access to copy that item to the Applications folder, which, of course, you can't really do, and I subsequently got this alert:
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