I actually meant to write "you were attacked on campaign map" ...
Thanks for info, I'll have a look at such scenario, in the meantime try the graphics solution, since I changed my GPU CTDs happen to me whenever I have too many troops in battle and too high graphics settings.
Actually I've had previous reports that the game CTDs when you attack army entering battlefield with arrows sometimes, but it never happened to me, even if I tried hard to repeat this scenario.
Regards