How to transfer animations between models correctly

How to transfer animations between models correctly

(sorry for my poor english)
I'm using oinkerwinkle's tools to transfer animations now. Sometimes succeed, somtimes fail. For example, it is quite easy to make a grunt animate like a footman(maybe because their bones are the same). However,in some more complicated situations(like a transfer between a grunt and a paladin), the model always breaks down after the transfer.I understand that something must be done more than simply click the transfer button. May someone teach me what to do,please.

You have to rename the helpers in the paladin.

Sometimes Blizzard turned into raw scum and simply changed the bone names to Bone_Arm1_L_Paladin or some other such rubbish, so it's not usually a difficult job.