HT203343: Resolve printer issues on your Mac
Learn about Resolve printer issues on your Mac
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Helpful answers
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Apr 29, 2015 6:57 AM in response to eohaahby Eau Rouge,It may not have actually installed.
check About This Mac, System Report,Software,Installations.
If it is not listed then it has not installed.
If it is listed as installed and therefore listed more than once, check further in these forums
there is an answer out there especially if it is for Pro video formats.
Otherwise you will have to try installing again and monitor the progress of the update, App Store often drops the connection.
you may also find an alternative download on the Apple Support download pages.
To clear the list you need to remove the updatejournal.plist