The game crashed again, no autosave or save in progress. It crashed in November. The closer save file I have is from the autosave, 1st of july.
I include the error log and the save file, just in case.
There were no errors that I could see. I think I had an army or navy selected and pressed F3 for diplomacy and I heard the "beep" error sound when you press a key that doesn't do anything (I hope I make sense). The game was frozen and the mouse arrow changed to the one I use under windows, but I couldn't alt-tab or make the task manager appear etc. After some random key pressing, including enter, spacebar etc, I was back to the windows' desktop and no rome process in sight.
My guess is there was an error box, but I couldn't see it and must have closed it by the random key pressing.