So. Mac. G5 iMac. I can play everything else just fine. I go to Multiplayer, I go to LAN Games. Put in the game name, put in my name, click "New Game". I get the following errors:

Network Error: The network socket could not be created.

Disconnected: The network socket encountered an error and was closed. Disconnected.

Error: Unable to start the messaging engine.

So, what's the deal? If I host an IP game I can get into the game config screen and all that. LAN apparently fails. And I've downloaded the latest patches and all that, though it didn't work before that either.