Hi All. I'm currently trying to use WED (the latest version) to update and modify some of my scenery's. I can import the scenery apt.dat perfectly, but when I try to import a .dsf from my scenery's, WED gives an error, attached in a screenshot. Please note that there is also a dsf.bak file in the earth nav data folder, that when I try to import that one, nothing happens, WED just loads for an extremely long time, causing me to have to quit. What to I have to do to successfully import the dsf file? Any help would be much appreciated. Thanks, Mateus