Karl von Randow

iMovie won’t start and uses 100% CPU

After using the Migration Assistant to move onto my new Mac my iMovie wouldn’t start. Clicking the icon made it bounce then it would stop and appear to not be running, but was actually running and consuming 100% CPU. To fix I removed Perian, ran iMovie, then reinstalled Perian - something must have become busted up in the migration. I’ve also read reports of other people having problems with other Quicktime plugins - so investigate removing them if you have problems. Remember there is /Library/QuickTime and ~/Library/QuickTime/ to look in.