Well I am sorry NailedEET & Barbeque I cannot find the guide again, but I do remember that even though the quest said failed and didn't show up in the mission log I did what you normally do in the adult quest line and see what happened, and somehow it started working again, the person said it could be a glitch where the quest says its not working but in reality its working just fine but shows its not, it was weird and I have never seen anyone else with this problem.
Do note however the mission did not pop back up in my mission log till near the very end where you first head into korins tower, I hope I could help you somehow with this I am not very good at explaining things