I've had this game for a while now and haven't bothered to update. but now that I have I am regretting it. I upgraded all the way to 1.3 trying to fix this problem.
When ever I start any kind of battle: Siege, or a field battle the game loads it and then crashes with that unspecified bs error. I can glimpse the battle for a moment, and it looks like my army is fine but the land is nothing but blackness or a very dark grey. I tried to get a screenie of it but it happens to fast for me to get a shot of it. I have already uninstalled and reinstalled back to vanilla version and now it does the same thing, even though it didn't before I patched it. I have a dxdiag if you need it.
And I haven't unpacked anything so that fix in the sticky wont work.