It's not very easy to help you with such generic information.
First, do you have BOTH the "Addon Manager" AND the "Couatl powered products" menu ? If yes, it means everything's fine and the problem must be something else.
If not, it means that either the Addon Manager or Couatl ( or BOTH, if both menus are missing ) are not running for some reason. The most common cause for this is the antivirus wrongly blocking one of them (or both), because it mistakenly detected them (or one of them) as threats.
- DOWNLOAD AND INSTALL with the antivirus entirely OFF
- Uninstall GSX. Reply YES when asked if you want to remove the Addon Manager and the Couatl Engine. Reply YES to both questions.
- TURN OFF your antivirus. Don't just exit from its interface, but turn off the real time protection. Actual wording changes between products, however, it's the option to scan every file that gets open in real time, without user intervention.
- Reinstall GSX (using the full installer in this case) with the Antivirus TURNED OFF. Don't launch FSX yet.
- Configure the antivirus to exclude the following files from scanning:
YourFSXFolder\bglmanx.dll
YourFSXFolder\fsdreamteam\Couatl\couatl.exe
YourFSXFolder it's usually C:\Program Files\Microsoft Games\Microsoft Flight Simulator X, if you installed it in the default folder.
- Now you can turn the antivirus back on, and launch FSX.
- Check you are seeing BOTH the "Addon Manager" menu AND the "Couatl powered products" menu under the "Addons" menu.
