I'm in a large game, I believe, and I've hit a point where clicking Turn (or hitting Enter) won't start the next turn. All my units have taken action, I don't have anything selected. I can do everything else it seems, from examining cities to looking at unit details without a problem. Hovering over the Turn button says "End Turn (ENTER)", but nothing happens. I don't see any kind of messages either. It is Season 240. I don't think that is the time limit but I'm not sure, I can't find what the limit is through the Hiergamenon. (No "victory condition" entry under "game concepts". Is it somewhere else?)
I don't have past save files, just this one load file.
Any ideas about this?