High Lake Cabin is right on the edge of Tongass X but actually in PFJ so PFJ has to be installed and active. The sim Scenery order (scenery.cfg) for Tongass X for it's coverage is critical and must be set correct in your scenery.cfg to display correctly - (even though you may have the Tongass 40 terrain.cfg entries correct in the terrain.cfg). After your FTX stuff is in then do Tongass X and add the scenery references to your p3d scenery.cfg. (First add Tongass Lower, then the Higher. (So that higher sits on top of the the lower in your scenery order).
For Tongass X in P3D - make sure you have the correct terrain.cfg to add the Tongass terrain entries: (there are two terrain.cfg but the one you want to edit/add the Tongass 40 entries in the terrain.cfg that is located here: C:\ProgramData\Lockheed Martin\Prepar3D v4 )
Now set your FTX insertions points in FTX Central v3xxx for Tongass.
Tongass X has to sit between FTX and OLC - Higher priority right above Lower Priority.
So: the insertion point settings FTX Central v3 read as follows:
FTX Entries should be inserted below: (*For now Leave this at the top of the library)
openLC Entries should be inserted below: Tongass Lower priority
This places Tongass lower and higher BETWEEN openLC and FTX.
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When you get to RTMM add have to do the libraries first..RTMM 1-2-3, Medical-APP, BWEP Library and then the scenery tester.
Now you set the FTX Central insertion point for the FTX entries (now that the RTMM Libs are in)
(FTX Central >> Settings >> Library insertion Point)
FTX Entries should be inserted below: RTMM Object Libraries (the name of your 1st RTMM Library)
openLC Entries should be inserted below: (No change) >> Should still read Tongass Lower priority
So what should have is the RTMM on the top section of your scenery order,
then below that - the FTX Entries (with RTMM Libraries folder(s) right above)
then below all the FTX entries is the Tongass entries (Higher on top of Lower)
then below that the openLC (OLC) entries
and below that comes Bathymetry (default)
Now you can then test the RTMM libs. (Test the RTMM Libs - before adding the rest of the RTMM add-ons).
Refer to scenery document in the MFC0001 tour (MFC_Addon Scenery_Requirements) - it's too big to fit here) but it illustrates the order, insertion points and items required. (Some pics attached here which also might assist).
Hope this helps Maever.
Norm