Weird Connection Error

At a sudden point in time, when I tried to test my game with the test server, it let me enter my username, then the 'Connecting to Server' loading screen just froze there. I tried again with a backup version of my clientside code (Which had connected before) without success; the serverside code didn't show any errors, nor did I change anything except a few variable names since the last test.

Anyone know what's happening?

Edit Post doens't work, so I'll make a new post...
I've pinpointed the code that makes the connection fail to be (in the .NET file)

public class Game : NonobaGame<Player> { String Story;

Although it's not considered an error, the String Story is somehow preventing the connection. Is there any other way to declare a global/class variable in .NET?

This works for me?
public class Game : NonobaGame<Player> { public String Story; }

Fixed now - problem was that a null value was being sent as a message. Thanks a lot, Oliver!

Thats why it would be great if null strings could be sent over the wire :)