Can't open QuickTime after trying to install update 7.4

I've tried to update my Quicktime Software to the 7.4 that keeps popping up on my software update. After it loads, verifies, and goes to install I receive the notice the Quicktime can't be installed. an unexpected error occurred and the installer package has been moved to the Trash. It tells me to try again, open the package from the finder... besides not being able to install the update, now I can't open QuickTime at all. Ideas?

To The Apple Discussion Boards!
Repair permissions & restart your computer.
Install QT again either from the Software Update control panel or download the full installer directly from QT download site.
After you install QT, repair permissions & restart again.

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