Good evening. I am having the same issue with plateaus and canyons. Also missing buildings. I have downloaded the latest GSX, and KIAH. Re-instal, but same issue. I tried the above program to find duplicate AFCADS, but did not find any. I found path to FSX, and I believe the scenery.cfg file is in users, appdata,roaming,microsoft, fsx. I am running mytraffic13. Have never had an issue till lately. Would it help to say no when asked if I want to load latest AFCAD, when I load KIAH? I can't find AFCAD files in Mytraffic folder. Am I missing anything, or is there another thread dealing with this issue? Thanks