First, my compliments on a wonderful game design. It gets even better with every patch.
I've encountered a rather specialized bug, and couldn't find any earlier mention of it when searching the thread:
I discovered a neutral NPR, built up relations to get a trade treaty, then sent in a Freighter and dropped off an Espionage Team on their home world. Eventually, the Espionage Team reported back with the location of a new star system, known to the NPRs but not to me. The new star system had a jump-link to the NPR's home system, and four other unexplored jump-links.
However... when I opened the Galaxy Map, I immediately got an error message:
ERROR: WP Link not found in GetWarpPointData
... and when I closed that error box, two more error messages popped up one after the other, both reading the same:
Error in Display WP
Error 5 was generated by Aurora
Invalid procedure call or argument
This sequence of three error messages repeats every time I open the Galaxy Map, every time I (shift-drag) adjust the display position of a star system, or scroll or zoom the Galaxy Map... basically, anything that forces a re-write of that map screen will set off the three error messages again.
It was starting to get a bit annoying, so I tried to correct the problem by using SM mode to create a new scout-ship, teleport it into the new star system, and explore all the jump-point connections until I had linked up this new star system with my existing map. Unfortunately, this did not fix the problem... the error messages continue every time I open or adjust the Galaxy Map.
The game doesn't crash, however... in fact, I find this game to be surprisingly robust at handling error states.