The same thing is happening to me, I've tried both sides of the war, my game runs flawlessly until I have to drop off the axe. I even COC'd out of the fight and skipped the quest that way, and it just crashes when I'm trying to leave solitude.I can't be positive but I have an odd feeling the war quest line is bugged from the alternative start mod. any body else having this problem with that mod installed? I'm running like 80 mods so I cant pin point it.