Hi Paul,
By default, only one copy of X-Plane 12 is supported.
In Settings your X-Plane 12 path should be where your main X-Plane.exe is located. You should navigate to it and Save it. Lets say it is C:\XPlane 12.
Addons for this installation should detected by Scan in Addon Mappings
A second copy can be manually added:
In Addon Mappings you can manually +Add:
- For Please select an addon… choose X-Plane (11.50+),
- For Install into… choose User Defined Folder say - C:\Xplane 12 Steam
If you have addons for this second copy you will need to map them manually.
As I say this is not a supported configuration but should work
Cheers
Ian