Clean install. Windows 8.1 Pro 64 bit. Full Campaign. Playing as CSA. Currently in April 1863 [I think ]
First of all, I would like to say that the game - this very persistent crash aside - is playing very nicely.
OK - this exact error has occurred sporadically throughout the course of the game. It occurs during turn processing and results in a CTD. Upon restarting game, I find that all my moves and orders are saved, I simply have to press the Next Turn button and the turn properly resolves. Except ... for this time! I have restarted he game about 4-5 times and it has not fully been able to get through the processing. Each time it crashes at different points in the turn. Seems it may be battle-related.
FYI: I AM running the game as Administrator.