I installed dawngaurd and i ve reached the point were i am vampire lord.However in whiterun when i enter certain buildings the Npcs start attacking each other(some attack me others take my side and attack the attackers). I dont know why this is happening but its frustrating.It might perhaps has to do with the civil war although i doubt that.Note that before these things start a vampire attacked whiterun.So what causes this and how am i going to correct it?