I get a CTD whenever I leave Riften. The CTD happens when am between the guard towers just down the road from the stables. An imperial messanger appears on the road and the game either immediatly CTD's or does so within a couple of seconds. Does not happen until I get far enough down the road to trigger the messenger appearing. The only mods I am using that might effect quests are alternate start, SkyRe and better quest objectives and I start the game in Riften. Is it possible I am trigering the messenger before I have done something else?