Post Kodlaks death and the quest(s) that follow, you get a quest from vilkas called "purity". When I enter into it he will not follow me and the quest goes into the completed section. I have tried going to Yssgramor (?) to see if maybe he was there and it could still be completed (with witches heads in tow) It could not. I tried activting the flames and nothing happened. I will not touch this quest until a patch is released and will begrudgingly continue onward as a werewolf with no way of absolving myself or my companions of this lycanthropic curse (and also no way of getting xp bonuses from sleeping!) Luckily my character is kind of a badass anyway and will just deal with it and likely use it to his advantage
Im not sure if you're already aware of this problem and am unused to the 'forum experience' so I am lacking in etiquette. I hope I could be of some help and please admin, user or otherwise let me know if Im speaking out of turn or if I should direct my comments to a more appropriate section. Thanks.