Okay, looks like I spoke too soon. Just to recap: I had purchased LSGG and also loaded the trial version of GSX to see what it looked like, with a view to buying the full package if it looked good. The buildings at LSGG would not display, I just got dark shadows on the ground; runway markings and so on were fine. Couatl would not run, kept crashing. After the initial queries here, I did some copying around of files and managed to get the scenery to appear. Couatl seemed to be fine. When I tried GSX, I was able to summon the ground services vehicles successfully. Then I tried to test the arrival features. I spawned at the end of the runway, taxied to one of the runway exist, hit CTL+SHIFT+F12 to get the menu up, and selected a stand with APIS and asked for a Follow Me vehicle. Nothing happened. I tried to get the menu up again, and it wouldn't appear. I decided to taxy in without the Follow Me, and found the APIS did not work as I approached the stand, and neither did the jetty move. Obviously, something was still wrong. I decided to bite the bullet and do a clean start. I uninstalled LSGG and GSX, deleted all the files and folders that I knew about, rebooted my PC and then reinstalled them all. Now, I am back where I started, in that the LSGG buildings are not loading. When I try to pull up the menu, I get the "Warp to a trial airport" interaction. The reinstall was all done to the default filepaths. I am using FSX:SE and Windows 7. Can you advise? In addition, the folder c:\ProgramData\12bPilot\SODE\SimObjects is empty - is that correct?