If you have the PMS50 mods (GNS530, GTN750), delete them and try reproduce. Then check those add-ons for updates.
If that doesn’t work, refer to this thread: New update avionics NOT WORKING,
If you have the PMS50 mods (GNS530, GTN750), delete them and try reproduce. Then check those add-ons for updates.
If that doesn’t work, refer to this thread: New update avionics NOT WORKING,