Strange problem when hosting game on lan

[Sir Kill-A-Lot 0]

Hi everyone!

I have a major problem, I can't host a game on a LAN. As soon as I have chosen the mission and press OK nothing happens, I can press OK how many times I want but it still doesn't work. I have tried different missions without any luck. Though I have no problem at all connection to other people throgh LAN or WAN. Anyone have the solution to this problem?