So I am playing Skyrim SE one xbox one and am doing all the dawnguard stuff, I am on the quest bloodline and the gate for castle volkihar won't open and a have Serana with me. Now I understand that she is supose to start a convocation with you when your coming up the ramp but that never happened so now I'm stuck so any help wold be greatly appreciated
P.s. I have the unoffical update mod on among a few other but took them all off and still didn't work