Thats 2 different things. Map protection is making someone unable to open the map via world Editor.
Anti MH is to cause the game to crash when a player uses maphack when playing the map.
Just do a comparison like if the player is able to see a doodad that is normally unable to be seen unless the player is using maphack, defeat the player.
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.