Quest bugs of skyrim

[Newlight]

ok before i start posting my quest prob with skyrim thogt id let you guys know if you have a quest bug like i do post it...or if you have the solution for a quest bug post it to ik you guys chould probly create  topic of yours but this is for people who dont want to wast time making a topic who just wants to jump in get it answerd you know...but ya this is for everyone who has bugs with there quest

 

ok my prob is after harkons speech (normaly serana comes to talk to you bout how to find a moth pirest) but doesnt this shouldnt be commen but this is the 2nd time i had this bug its realy rar now ik it my not be much of a big deal but it may case big prob if ignored like after sending the pirest to harkons place then giving him you report you may not be able to talk to him like no dailog no coments just stands there doing nothing

 

i havnt completed the quest to know what happens without having serana as a follower but she may be needd to progress further in the story so if you dont have her as your curent follower and your going back to harkon to complet the quest he may not talk to you as i saied...but its just my opnion you know...but ya if you know how to fix this bug plz leav a reply...going to try and summon her using conal command and her id

[bleakraven]

Erm... I'm sorry... I can't understand what you're saying...? You mean your quest stage is not advancing?

[Leodoidao]

You could try Dawnguard´s unofficial patch, maybe it will fix that.