BrutaTralb I don't think that's the problem.
To be sure we are on the same page what do you see is wrong?
Afaik, the turret won't react in creative mod until you either change to AI control or give it or the ship a target. Since the AI has no problem that already proves the emitter is linked.
I'm guessing the problem has something to do with the "recent" changes to fire mode logic in Cosmoteer 0.15.12. Welp, I don't see how I can fix that at the moment.