Chosen entity not spawning?

In my war of the worlds - tripod SNPC (almost finished), I need it to spawn an entity, which it is not doing at this time, here’s my code:

local entBomb = ents.Create("obj_tri_bomb")
entBomb:SetPos( self:GetPos() + Vector( 0, 0, 100 ) )
entBomb:SetOwner( self )

I know that the entity works, since I’ve spawned it with console commands, but for an odd reason, it doesn’t seem to be working…
I can only guess that the problem is ramming it’s fist down my throat, but I cannot seem to see it.