Usually occurs when you have an unsupported network adapter. It wouldn't be a Realtek adapter would it?
I still can't get streaming to work, I can rip the game but when I try to stream I just get this wird message and the screan on the tv goes no were.
Have you tried a different cable? Are you using a crossover or patch cable? Are you connecting to the GC through a router, switch, hub, or direct? What make/modem NIC are you using in the PC?
When it crashed for me, i just went out and bought another NIC, they go for some 20$ now, grab that and a crossover. set the new nic to a static IP and dedicate it to the GC. works great for me.