I've been having problems with kdfw telling me that it's active but not installed in scenery library. I had looked at some of the post about problems. I discovered when I compile the afcad in ade and save it over the ap_kdfw.bgl the ap_kdfw_obj.bgl disappears. That is the problem. If I have a copy of the obj file and put it back in. It works great, or if I compile to another folder it works. So if any one has this problem with ade I guess that's the solution. I haven't talked to ade forum yet. But this had been driving me crazy.