Ok, I can confirm the problem - I had him tripping humans and attacking snakes, but against undead he won't move. More testing needed! I found a bug at the end of the dlg file for training - that shouldn't be the problem but those sort of bugs have funny results. I'll check the latest version of the file (dust off the modding laptop) and see if it works any better. EDIT: Still not sure, it doesn't seem to just be the default 'you can't attack unnatural things" kicking back in, or there would be an appropriate floatline. <sigh> A LOT of testing needed for what works and what doesn't. I'll try again tomorrow.