Around the airport in certain areas, there seems to be missing autogen buildings, and or modeled buildings. I was trying to find some screen shots to see if this is how the scenery is supposed to be or if I have a scenery error.
I have no terrain mesh or texture addons. The only other scenery I have in the area is the Chicago Midway V2 by FlyTampa. (Deactivating this scenery didn't change the Chicago O'hare scenery)
Here is a picture of the biggest area with no buildings which is NE of the airport.
http://i928.photobucket.com/albums/ad125/matt51334/ohare_autogen.png
