- Ensure that you have not reached the activation limit for the 717. Reset the activations if necessary.
- Navigate to %localappdata%\TFDi Design Addon Manager and delete install.key located in the directory previously mentioned.
- Uninstall the 717 via the platform it is installed on. After this, close the application, re-open it and attempt a reinstallation of the aircraft.
If the error message still appears, please try these steps:
- Navigate to %localappdata% and delete the entire folder, "TFDi Design Addon Manager" located in the directory previously mentioned. Uninstall the 717 via the Addon Manager then restart the program and reinstall the 717.
If you are still having issues with activation, please open up a ticket and our support staff will assist you.