I tried talking to him and saying: "weapon's fire was in error", because at first I thought I accidentally bumped into him. But that didn't work.
Eventually I just changed ships and sent my Tanker on ahead. In my sabre I waited at the gate and eventually he comes through (blue), he turns red for no apparent reason and tries to destroy my Vulture. I quickly said 'Weapons fire was in error' although I did not fire of course! He turns blue for 5 seconds and then turns red and destroyed my sabre...
Really... what could this be? How can I solve it?
(I also tried intercepting him with my sabre, and he is blue and stays blue while he is still in Belt of Aguilar, I didn't follow him all the way to Nathan's Voyage, maybe I can try that...)
EDIT: I checked and that I had the wrong Centaur. In fact, when I caught up with the transport in Nathan's Voyage he was there waiting, turns red 12 km away from me and my freighter... I'm starting to think he must be part of the mission... but I am in an M5 lol... Is he part of the mission?