Collisions not working

[Dark Slayre]

I just started a new server, and the collisions for players don't work. The collisions work in singleplayer, and when I host a server, but on a dedicated server it doesn't want to work. The gamemode is Zombie Survival 2.1, and here's the gamemodes code:

if not MYSELFVALID then return end

local myteam = MySelf:Team()
for k,v in pairs(player.GetAll()) do
	if v:Team() == myteam then
		v:SetCollisionGroup(COLLISION_GROUP_DEBRIS_TRIGGER)
	else
		v:SetCollisionGroup(COLLISION_GROUP_PLAYER)
	end
end

require("guardian")
function ShouldEntitiesCollide(ent1, ent2)
	local enta = Entity(ent1)
	local entb = Entity(ent2)

	if enta:IsPlayer() and entb:IsPlayer() then
		return enta:Team() == entb:Team()
	end

	return true
end

[|FlapJack|]

You have got the gm_guardian module installed, right?

[Dark Slayre]

My server may have not let me upload it since it's a .dll file, let me check.
Edit: Oh wow it's not up there. I feel kinda stupid not even looking for the guardian file. It turns out I have to return should collide to false because true breaks it. Thanks FlapJack :)