Suddenly I've been getting vertical contrails behind aircraft in cruise. See pic. Any idea what is causing this??http://forums.avsim.net/user_files/183485.jpg

Hi,You installed an Add-On that added a second contrail effects file.Thanks, Jimhttp://www.hifisim.com/banners/hifi-community-sigbanner.jpghttp://www.hifisim.com/