It's set from 3-12 because I don't want it working for red, blue, passive, victim, hostile, or extra. And yes it's set to something. Unless MainUnit dies. The trigger is supposed to make sure it's always set to something or the player is defeated.
Dying Unit works. It works in all the other triggers. I am not testing as players 1 or 2, because nothing else works for them either until I get to them.
Ghan has said he has fixed this. Monovertex please confirm this fix. This was only a problem with people that had signatures in the upper levels like not the special members but the respected members.