Hi KYL,
Quit QuickTime first.
Drag the following files to the Desktop:
com.apple.quicktime.plugin.preferences.plist
com.apple.QuickTime.plist
com.apple.quicktimeplayer.plist
They are located here: /Users/YourName/Library/Preferences. Drag those files to the Desktop. Now, go to this page:
http://events.apple.com.edgesuite.net/0809dt4bs89/event/index.html and see if QT works for you. If it does, drag those files to the trash, empty the trash and reboot. Those are preference files that can become corrupted. Your Mac will make new ones for you when you re-launch QT. Hopefully this will help.
Carolyn 🙂
Message was edited by: Carolyn Samit