The Scripts folder & menu

After Effects scripts reside in a Scripts directory, within the same directory as your After Effects 6.0 application file. Only scripts contained in this Scripts folder will be automatically listed in the Script menu, although a script file can reside anywhere.

To run a script that does not appear in the Script menu, use the File > Run Script > Choose File... command and choose the script in the Open dialog. Alternatively, you can send After Effects a script from a command line (on Windows) or from AppleScript (on Mac).

To be seen in the Open dialog, your script must include the proper ".jsx" file extension. If your script names do not end with this extension, the application won't see them.