I had a search of the posts in the forum, but have not seen this happen.
I am a 48 Shadow with healer as companion. I can manage this fine, my gear is good, but afer three fights I've died because of a really annoying glitch.
I am interupting all the cave ins, but in each fight, he has cast he spell, but with no cast bar, and as a result, no way at all of interupting. First few times I thought I just needed to be quicker, but this is happening every time (and a couple of times at the last few %, just to annoy me.)
Has this happened to anyone else? Is this a known error?