When I fire missile in trunk it comes out dead in space, no velocity at all. At first I thought it was just OXP ships but after some testing I found that the cobra3 missile_launch_position is actually 0.5 below the model, so I can't tell if it is launching properly or not. I tried with the python and the adder they both launch a dead missile then promptly run into it if my speed is greater than 25% or so. If I am completely stopped the missile launches, pauses momentarily, then engages the engine and takes off. I can't reproduce the effect in 1.80 although if I fire a missile with the injector engaged I run into the missile, but its engine is engaged.
No exhaust plume.
Edited misspelled subject