User blog comment:Bobbyhall/Sold the elder scroll to Urag and i need it!!!!!/@comment-4658181-20111205180447/@comment-26474238-20111205182941

My only guess (aside from the quest glitching) is that you might have sold or dropped the extractor. For some reason (atleast for me) it doesn't act like a quest item which means you can remove it from your inventory. Problem is that is disappears (like the unique ghostblade) once you've dropped it. You might just have to cut your losses on that character until a possible patch fixes your problem.