Hi Ben,
Thanks for the explanation. The file that I am referring to is gantry_joomla_framework-3.0.12 which was the download file when you click on the Upgrade Gantry link in the template.
So I uninstalled the component and got these errors:
* It was not possible to delete the selected file.: 'CHANGELOG.php'
* Component Uninstall: Unable to remove the component site directory
* It was not possible to delete the selected file.: 'manifest.xml'
* Component Uninstall: Unable to remove the component admin directory
So I manually removed the directories and then ran the install and got this error:
Unable to find install package
Suggestions?