It gets stuck on 2 places. 1 is when it want to go under that tree. 2 is in water at wooden platform, he can't go up on it.
well... it?s only killing: http://www.wowhead.com/npc=7086/cursed-ooze and that one is only dropping: http://www.wowhead.com/item=20767 that is?nt even dropping the companion at all.