There's lots of potential causes for hanging between turns. This bug is not necessarily related to that one (if I have my dates right, then I suspect the April one was largely caused by a hang when the AI invading a planet, which was fixed prior to release).

In fact, Stardock had largely eliminated end turn bugs by about 1.02; some seem to have crept back in in 1.1 but are probably triggered by something entirely different.

There's a good chance it's being caused by something the AI is trying to do. Loading a game a few turns back and interacting with the AI can make it change what it's doing, and might let you get passed it. Chances are, if you've only got the save immediately before it locks up, its too late. Though you could try taking the save, loading single player, using god mode and turning of fog of war to see what the AI is doing, and then seeing which unit it gets up to when it crashes. On the other hand, you might not find anything, and it may not be an AI lockup; it's really hard to guess from just the lockup.