ProfUnreal: OK, it works. This time I fought the enemy and could complete the mission without crash :-)
It would be interesting to find out whether this is also the case with the original version.
Without this post here, I would probably have spent many more hours looking for the solution. Thanks @fablefox :-D
That is very interesting. I've never had that happen to me, and I run away from enemies quite often, particularly after I get the most powerful ship. It's faster to just hit the nav point and afterburn away.
Although, now that I write this, I wonder if maybe it's a memory limitation thing for if you're not *that* much faster than the enemy, and the enemy just follows you forever. In that case, you might be collecting 1, 2, 5, 8, 15 enemies following you, and maybe you're hitting an upper limit on the number of objects the game can track at one time?