Developing Firefox or Thunderbird Extensions: Extensions Folder not found in profile folder or Extension not showing up in addons
Issue: When developing Firefox / Thunderbird Extensions , after copying your extension to the extensions folder, your extension doesn't appear in the Thunderbird / Firefox. Cause: Mozilla apps can be installed under 3 profiles: 1. Single User : Extensions accessible by single user 2. Multi User: You can setup multiple Firefox profiles still use the same profile folder : default for extensions. 3. Global : This is the installation folder itself. Extensions installed in this folder available for all the users have access to this folder. If your install option and the development extensions folders differ , after restarting the application will not be to locate in the extensions folder it is looking for. FIX: (Don't get confused with Window's user profile vs Firefox user profiles - they are different) If you had selected 'Single User' install , move your extension files/package under your user profile Windows: %APPDATA%\Thunderbird\Profi...