I reinstalled xp on a formatted partition a few days ago and FS9 on another formated partiton. Having done some experiments I can guarantee CTD everytime by going to any of 3 (I only tried 3) different UK add on airports in default aircraft, sitting on the ground and calling the map dialogue. 100% repeatable. Does not happen at default airports. Time of year - summer!Immediately afterwards my firewall show that the direct X diagnostic tool is demanding internet access.Running xp pro with sp1 + updates, dx9b, 9700pro 3.9 drivers (I will try 3.10 s),Intel 3.06 chip + Ultimate traffic, Active camera, FS Nav, latest FSUIPC.Regards