Buggy Mac App Store Updates
If you click on your purchases it’ll frequently claim that several of them belong to an other account, even though I’ve only ever used a single account. Thus they don’t update properly. So I can’t get tonight’s iPhoto update, for instance.
I’ve seen all sorts of weird behavior with the Updates tab. Yesterday, a customer reported that it was offering EagleFiler 1.5.10 as an update. This was the version he already had installed, and although it was listed as an update the button was disabled. To prevent the Mac App Store from offering this “update” he had to delete and reinstall the app.