That's odd. The manual says: "After switching from normal to client mode with a loaded level, the level must be loaded anew."
Also, I remember being forced to because everything was cleared out when I didn't use level_load, and I'd get an error complaining that there was no level. Today I commented out the level_load after joining a session and tested it. I started a server, started a client, joined the server from the client, and the level went black and I got this error:
Malfunction W1517
on_client_event - no level!
So I'm very surprised about the confusion here. (And confused, given Sajeth didn't need a level_load)
Jibb