LOS and picking instances of object

I found a cool example from Rojohound on RTS and pathmovement and chasing a player using LOS.

I wanted to use something similar for the network demo I'm making so I added a couple of instances of the player and it completely breaks LOS detection?

However, when I destroy the original sprite then everything works fine. Is there a way to keep the original sprite and still have correct LOS?

It requires Rojohound's path movement plugin.

http://www.box.net/shared/l6xxpxjr3u

If your not terribly worried about being able to see around other objects, and you dont care if the detector can see in 360 degrees then distance(), and picking via private variable should work.

thanks newt, for now I decided to just destroy the object on startup. I wanted to keep the ability for the players to hide behind walls.