Before doing anything further - I have the same problems in FSX as well (using the old scenery.cfg methodology). Testing at KIAH, KDFW, KFLL, KJFK, KMEM and PHNL I have no buildings, though again the sceneries show as properly activated in AddOn Manager. FlightBeam airports (KDEN, KPHX, KIAD) appear to be fine. I'll add that I updated GSX to V2 last night; didn't solve the problem (the GSX commands seem to work fine though). I've not tried to re-download and run the latest StandAlone AddOn Manager yet. Oh sorry forgot to mention - Win7 64 bit.