Opening Quicktime Files no longer launches Quicktime Application

I recently did an 'Archive and Install' after the latest version of Quicktime started to cause me problems. The 'Archive and Install' took me back to Quicktime 7.2. After updating the QT ap I am now back to Quicktime version 7.3.1 on OS X 10.4.10.
The problem now is that when I attempt to open a Quicktime file by double clicking on it, it will not open (If the Quicktime player is not open at the time it won't even launch). As a workaround, I am opening Quicktime files by using the 'Open' command directly from the Quicktime player menu.
While I am still able to get work done, navigating through multiple folders from the Quicktime Player menu is a huge pain. Any ideas on what went wrong and how to get things back to 'normal'?

Reinstall QT v7.3.1 from the full installer, repair permissions & restart your computer. See if that resolves the issue.
List of QT older versions

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[Mac OS X: Double-Clicking a File Opens the Wrong Application|http://support.apple.com/kb/TS2291?viewlocale=en_US]
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5) If the application showing in the menu is not the one with which you wish to open the file then select a new application. If your application does not appear there then select the "other..." and track down the application (usually in the Applications folder at the main level of the computer).
6) If you wish to change all files of this type to open with this application in future, make sure the "change all" button is selected.
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[Mac OS X: Double-Clicking a File Opens the Wrong Application|http://support.apple.com/kb/TS2291?viewlocale=en_US]
*Changing the application used to open all files of a certain kind*
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5) If the application showing in the menu is not the one with which you wish to open the file then select a new application. If your application does not appear there then select the "other..." and track down the application (usually in the Applications folder at the main level of the computer).
6) If you wish to change all files of this type to open with this application in future, make sure the "change all" button is selected.
7) Close the get info window.
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As with any problems, I would also make sure you have run disk utility to verify and repair your drive, and repair permissions on your computer, before doing any other actions. It's surprising what that can clear up. You can slo just try starting in Safe mode, then restarting normally and see if that helps.
[Mac OS X: Double-Clicking a File Opens the Wrong Application|http://support.apple.com/kb/TS2291?viewlocale=en_US]
[Mac OS X: Starting up in Safe Mode|http://docs.info.apple.com/article.html?artnum=107393]
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Opening Quicktime Files no longer launches Quicktime Application

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