This site is being deprecated.
Please see the official X‑Plane Support page for help.
I am not with Laminar Research; just a flight simmer from downunder.
I would suggest you lodge a Bug Report. Detrails can be found here at http://dev.x-plane.com/support/bugreport.html
See Release Comments for 11.34r, specifically the Question of Carlos Mendonca. In short: "If you have trouble with “buildings disappearing” (in any of the included airports), open your Scenery_packs.ini file (found in /Custom Scenery) and edit it so that the entry
SCENERY_PACK Custom Scenery/Global Airports/
is WAYYYYY at the bottom"
This site is no longer being actively maintained.