I guess this is just some kind of option in my hammer that is messed up or something, but when I run a map, I just get my grey floor, inside the skybox. I place an entitie by clicking on "prop_physics", then doubleclick it, and select a prop. It shows in hammer, in every screen. But when I run my map, all the entities are gone... :mellow: I've asked some people with mapping-experience already, and they said "I don't know, that never happened to me". Any idea how I can fix this?