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I have only one Apple account but get this message when I try to update iPhoto, GarageBand and iMovie from the App Store. All this software was bundled with my Mac when I bought it last November. This happens when I am logged into the App Store with my only Aplle ID and when I am not logged in.
There appear to be a lot of Mac owners with the same problem but I have not found a solution that works for me. Apple Support does not seem to have an answer for this, which I find incredible and frustrating.
Any new ideas or fixes available?
iMac, Mac OS X (10.7.4)