login alpha6 fails

Since upgrading to the latest 4.1.0alpha6, I am unable to login with the new configurationbuilder. The method I use to connect is below

XMPPTCPConnectionConfiguration.XMPPTCPConnectionConfigurationBuilder config = XMPPTCPConnectionConfiguration.builder();        //Set config params        config.setHost( HOST ).setPort( PORT ).setServiceName( SERVICE );        config.setCompressionEnabled( true );        config.setUsernameAndPassword( nickname, password );
mConnection = new XMPPTCPConnection(config.build());        try {                 mConnection.login();// Log into the s            Log.e( "CONNECTION", "CONNECTED" );            mConnection.login();// Log into the server

mConnection.login(); fails to authenticate the user to the server.