I lust downloaded the KMEM demo and coincidently tried to load My PMDG Jetstream J4100 there, I get a fatal error message when the buildings try to load, ramp, gate, runway doesn't matter, My PMDG 744 and all the other planes I've tried work fine so far, also the J41 works fine at all my other FFSDT, C9, and FB add-on airfields.
I'm running ORBX-NA, Active Sky Next, GSX, on a Asus Maximus, Win7 64 with two GTX 460 graphics cards and 16g G.Skill Trident PC3-1700