Bug with Dagoth Ur (The Elder Scrolls 3: Morrowind)

I come to Dagoth Uru on the ridiculous, killing his ash vampires and taking them Keening and the Separator. I also have a glove. I approach him and he says that I came unprepared. If you try to ignore it and kill the heart of Lorkhan, it deals damage and kills instantly. Tried the console does not work.