Is it when you go to the multiplayer section in general or only when you are scrolling through the servers. Cause if it's the first I think you need to re-install toribash.
If it's the second then it's probably the same glitch as I have, you scroll through the multiplayer list and when you reach the last server toribash shuts down. If you have the second re-installing doesnt work, you just need to avoid the last server.