impina

Spoiler warning:

I've run into what i think is a bug where as soon as you-know-who comes and gives me the phylactery and joins the fight.... if I speak to him both he and edwin turns hostile: "<PCNAME> you have made a big mistake. "

The same happens if I don't talk to him and just finish the lich fight. At which point he speaks to me and says the same thing and starts attacking. I'm not sure what to do. You know who is immortal as well so killing him doesn't seem to be the quest line.... I have banco's ring, banco trapped in the phylactery and the used up teleport ring, and ofcourse edwin's silly hair necklace.

Please help