I wonder if im the only one who gets a bugg with the unholy pet. When I do arenas and duels my pet sometimes just wont respawn. It says "its not ready yet" But I have the mats and everything. I have tride /reload and restart the game and so on. But nothing seems to work against it BESIDE just being loged out for a day or so.
From the looks of it, there "might" already be a bug report about this. You can go here to read more and add details if you feel like they are missing.
Yes, UDKs still have a ton of bugs that need fixing, most of them related to their pet. Just check the bugtracker and upvote - that's the best thing you can do...