UPD_Socket error # 10013: Unknown error

The error appeared when I tried to log onto SRB2's netplay mode.

I attempted to open the list of servers that were currently running at the time, and then the game closed out and the error message popped up.

This has never happened before, and I didn't have any problems when I logged on earilier today. What might I have done wrong?

That's doing the same thing to me too. I'm trying to look through the forums to see if anything's wrong.