You will need to unpack the descr_flaming_projectiles.txt, arrow_trail_effects.txt and descr_projectile.txt files. Open descr_projectile.txt and you will see that it list the effects set for each type of projectile. The first effect set listed will contain the trail effect also. The trails effect_sets can be found in the other two unpacked files. For normal arrows it shows arrow_new_set. This effect_set is found in descr_flaming_projectiles.txt so open that file and comment out the arrow_model_trail effect like so:
Code:
effect_set arrows_new_set
{
lod 1000
{
arrow_model
;arrow_model_trail
arrow_whizz_sound
arrow_fly_sound
}
}
That should do it. The same method can also be used to remove other trails such as cannonball trails.