Can't message channel immediately after joining

[zloveless]

Trying to message a channel immediately after joining returns an ArgumentException saying it's invalid.

System.ArgumentException: The channel name '#genesis' is either invalid or does not exist. (Parameter 'target')
   at Atlantis.Net.Irc.IrcClientExtensions.MessageAsync(IrcClient client, String target, String message)

The exception is expected because Message() checks if the channel's first "registered" or "known" to the IRC client to prevent spamming the server with PRIVMSG's for channels that the client isn't on. However, I'm thinking we should see if the JoinChannel() method could add the channel.