I've been playing Skyrim since December and I am unable to complete "Horn of Jurgen Windcaller" because Wulfgar won't teach me the final word of unrelenting force. Arngeir has told me to talk to him and the quest marker tells me to, but he just bows his head slightly and nothing happens. I stupidly carried on playing so I can't revert back to an old save. It's really annoying because whenever I try to talk to Arngeir he just tells me to talk to Wulfgar meaning he won't teach me the shout from Alduin's wall and that I can't finish the main storyline. Is there anything I can do to sort it? One of my mates said that the latest update should sort it out, but I've had no luck. Cheers for any replies