Did you click the 'Internet' button when starting a server?
Although this is a good point to start from, I'm going to guess he's done that first.
V14 hasn't fixed entirely everything to hosting a server. It's also down to something with the ports, but I'm not going to pretend to entirely understand it all, because it mainly just goes over my head.
Anyways, just calm down and forget it for a bit. I hear something to do with the ports problem may be focused on in the next update, but I'm not too sure. Until then, just play on other peoples servers. You're not missing too much by not being able to host a server.
