Hi Kevin,
To add to Richard’s suggestions,
Please note,
The addon is Rotate MD-11 F, rather than “Roate”.
There are no Rotate MD-11 F requirements for folders in Custom Data.
What happened since Navigraph FMS Manger - #10 by Ozarkflytyer ?
Please perform the steps I mentioned at Navigraph FMS Manger - #8 by Ian , and post the screenshots I mentioned there.
In FMS Data Manager Settings, ensure the X-Plane path points to the location of your X-Plane.exe file.
In Addon Mappings, select and Remove any X-Plane and X-Plane addons items, particularly Rotate MD-11 Freighter. Press Save. Press Scan. Press Save.
You should now see the following mapping. The white mapping is shown by hovering over the entry:
In Addon List, select Rotate MD-11 Freighter and Update.
Cheers
Ian