I got a "NetConnection.Connect.Failed" error. Maybe it's because I'm on 3G. Not sure...
I set it to auto-reconnect in v0.6.3 Hopefully it will succeed after a second go on a unstable network. Also I just remembered that some providers block outgoing UDP traffic. Would you mind posting a screenshot of:
http://cc.rtmfp.net ? This determines if it is possible for you to connect at all

Failed to connect to the rtmfp checker. Must be something that AT&T blocks.