The Find File application uses AppleScript to execute some of its functions. It also requires an extension called the Finder Scripting extension to perform these functions.
You should make sure the Finder Scripting Extension is in the Extensions folder of your System Folder and that it has not been disabled in the Extensions Manager control panel.
If you cannot locate the Finder Scripting extension on your hard drive, you will need to reinstall it by reinstalling your system software.
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