Something weird. It's not the first game I've played on this beta where I am going bankrupt following a ship upgrade, but this time, there is no coming back from it.
I know I went bankrupt before in another game and it got ok after my treasury went back positive, but now it is simply not working, even if I'm generating cash and have a few thousand credits in my treasury, research and production are stalled.
I didn't see anything like that in the forum, nor in the beta 6 bug list, so I reported it with a saved game (#LXY-445-95150)