When I try to Load the Skyrim.esm, Upgrade.esm, and the Dawnguard.esm my pc will get through the error warnings then it will give the "Program failed to respond" popup and close the creation kit. It doesn't do it for any other combinations off mods, just with dawnguard. Although when starting any in the top left of the window next to Creation Kit it will often say not responding, but left alone it starts. I do not know if this is do to the fact my OS is on a raid 0 on 2 ssds and my game drive is a hdd, and my hard drive can't keep up with my OS. In XP you could edit the time for a program to respond, but I don't know how to in Window 7, as I can't find registry editor. Any help or ideas would be appreciated.