I feel like I am almost there.
I have uploaded the external template to the directory
Then I uploaded the 'Telerik.Sitefinity.Configuration.ControlsConfig.xml' file to my 'App_Data' folder with this code in the file:
|<?xml version="1.0" encoding="utf-8"?>
| <!-- Provides the user with a customzied RadEditor -->
| <viewSettings hostType="Telerik.Cms.Engine.WebControls.Design.GenericContentDesigner" layoutTemplatePath="~/Sitefinity/Admin/ControlTemplates/Generic_Content/GenericContentDesigner.ascx" />
However, I am still getting the default version of the Generic Content. Is there something I am forgetting to do?
Thank you very much for your help,