Stargate "Invisible" On server!

I installed the stargate mod to my server on serverffs.com and when I run the game and enter the server, I spawn a Atlantis Gate (and also the other) and when it spawns my physgun goes right through it and I cant move it and I can walk through it. When I go up to it and hit “use” nothing happens either. Every thing else is working ok. When im off the server on single player it works fine. I reinstalled it 4 times on the server an its still not working. Can someone help? I used the SVN for it.