I've downloaded the "Pro Video Formats 2.0.1" update at least twice, but it keeps showing up in the Mac App Store. How do I fix this?
I had something like with with another update a few weeks ago. It is probably caused by their database records being slightly out-of-sync.
I ignored it for a couple days, and it went away.
I had that issue with the 2.0.1 update as well. What finally worked for me (see this Apple Support Discussion) was downloading Pacifist and using it to install the update that I downloaded manually from the Apple Support site here. All you have to do is choose "Open Package" in Pacifist, select the Pro Video update disk image, and install the top-level item ("Contents of [dmg name].dmg").
This method seems to have worked for me. However, something about the installer seems to mess with file permissions, because Disk Utility had a lot to sort out after installing. This seems to have more to do with the Apple Installer itself, though, and not the method by which it is installed.
Just called Apple support... here is the official fix.
- Move all files from /Library/QuickTime/ to a temp older on desktop
- Open AppStore and download/install update
- Copy any missing files from temp folder on desktop to /Library/QuickTime. For me this was 1 file, AppleMPEG2Codec.component.