What is causing me to have 2 sets of contrails, one set is normal and the other archs to the ground......Here is a screeny http://forums.avsim.net/user_files/96811.jpgThanks for the help

Some add-on (usually from FS2002) has FUBAR'd your contrails files in the Effects folder. There are 2 contrails files in FS2004... contrail_l is 2.29kb and contrail_s is 1.17kb. Both are dated 5/13/2003. If you have anything different from these 2 it's time to get out your original FS2004 CD's and replace the originals.Hope this helps,Greg