Hi again:
You should be able to get both LibObjects and GenBuildings working inside SBuilderX.
They work on my installation of SBuilderX 3.14 (64-Bit), although I cannot recall what I did to get them working other than to populate those sub-folders with the contents of the sub-folders from a full installation from the installer of SBuilderX version 3.13 (32-Bit).
I also think I added 3rd party thumbnail images into those sub-folders which may have been made available from Luis Feliz-Tirado, rhumbaflappy, scruffyduck and Brian Wallis from various download locations.
IIRC, when the SBuilderX version 3.13 (32-Bit) "full" installer written by SBuilderX author Luis Sa' is run, it retrieves and copies information from default FS folders. and populates the pertinent configuration files and the INI file in SBuilderX.
Quite likely you are running the "complete" ZIP file of SBuilderX 3.14 (64-Bit) made available from rhimbaflappy, but IIRC, you may also use a side-by-side installation of SBuilderX version 3.13 (32-Bit) without interference.
So, you may wish to install SBuilderX version 3.13 (32-Bit) and allow it to access the FSX installation folder chain to retrieve what it needs, while also allowing permission to install the Luis Feliz-TIrado "Modified Terrain.Cfg" at the prompt to do so.
After making a ZIP backup of the entire contents of the SBuilderX 3.14 (64-Bit) LibObjects and GenBuildings sub-folders
within their respective sub-folders, one may then copy contents of the SBuilderX version 3.13 (32-Bit) LibObjects and GenBuildings sub-folders into the identically named sub-folders for SBuilderX 3.14 (64-Bit), allowing permission to over-write.
NOTE: Although ADE has the ability to import Generic Building placements, it has deprecated the ability to "create" those scenery objects to a minimal level if any, in latter versions.
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EDITED]
The work-flow that enables ADE to import and display Generic Building BGLComp-type XML 'placement' code originally created in SBuilderX, is discussed in this thread:
http://www.ptsim.com/forum/viewtopic.php?p=8251&sid=3373820232f239c97ec2ae71e8fa5246
ADE also has the ability to display thumbnails and footprints for 3D MDL-based scenery objects in its 2D CAD-type layout view, which can be helpful.
I am not certain whether that feature is also able to create footprints for Generic Buildings, but if so, one likely has to do most initial production of Generic Buildings in SBuilderX, then import the XML code into ADE.
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END_EDIT]
FYI: Helli Hauck, who coordinated most recent work on the ADE manual wrote an excellent guide for working with Generic Buildings here:
http://www.fsdeveloper.com/downloads/generic_buildings_for_FS9_and_FSX.pdf
Hope this may help a bit more !
GaryGB