It is random. Atleast I was unable to find any reason to why.
Installed the optional. Also here is the save file.
It happened this time when I approached the caravan. And after some purchase "refresh dialog".
https://www.dropbox.com/s/e9lf2a2t1i...0%232.sav?dl=0
https://www.dropbox.com/s/9stj48rezz...Gfile.txt?dl=0
Also I will change the resolution to see if anything else happens.
Btw. When the caravan is under attack a big stutter comes into play. Due to the massive space battle.
Edit: crashed the same as I written before.
Edit 2.0: Changed resolution to 1360x768 and crash after comfirming docking to caravan.
https://www.dropbox.com/s/9stj48rezz...Gfile.txt?dl=0