I seem to be stuck on turn 962. Clicking the button to continue to the next turn does nothing. Unfortunately because of the length of this particular game, I don't have any more details as to what is the cause. What is different from this game then others is that I have unlocked all research for both the Civ and Military trees except for the additional improve education / housing and the two military improvements that seem to continue on indefinately (movement & training i think?). If it is wanted, I can try and post or email the saved game.
This appears to be the same bug as https://forums.elementalgame.com/383886
I also saved and loaded this game.