Elder Scrolls 5: Skyrim Discussion
Trainer Tools and Resources
I had a look into this bug for you, it is indeed one that Bethesda are aware of, and it will probably be fixed in future updates, for now, though, here's the information I found about bypassing the bug.
It would seem completing the College of Winterhold storyline before this quest will break it, Urag gro-Shub, the librarian will not have the needed dialogue options to continue the quest.
"PC users can use the console to progress the quest by setting its stage to 80, this will let you play through the rest of the quest and finish it properly."
"It might also be possible to bypass this bug simply by going to the Dwemer Ruin the quest would normally lead you to, and play through it as normal, without first progressing the quest to the proper stage. You will however, of course, not have any objective markers to rely on."
I hope some of this helps you, and that you are able to continue on with the game, and enjoy it as intended.
Francesca, Bethesda Technical Support
But the biggest game breaker is the Main Quest when you have to go to Riften and do the escort quest, sometimes Brynjolf will not start the quest line because he is in a loop of the steal the ring and plant quest, or Esben needs his speech files extracted so you can speak to him.
Although using the console works to a degree, it doesn't help when you can't start quests because of some bugs.
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