user name error message

[FalseNames]

When attempting to use a space in the username, you get the following error within the client.  It might be good to replace that with an "invalid character" type message.

[IOErrorEvent type="ioError" bubbles=false cancelable=false eventPhase=2 text="Error #2032"]

[Xione]

This error also gets shown when logging in with wrong credentials!