Has it happened in other saves or if you have a newer build, in the new build? 0.66 was a while I go, I wonder if I've fixed that already in the newer builds and just forgot that the quest had a bug.
I think there was something about the quest that I had to look at when the guy who does the preset saves found something. I vaguely remember something like that, but I fixed it back then.
I just did a rerun of the quest and everything worked as they should have, hmmm....