Network.Connect() won't connect?

I have used Network.Connect before fine using (an ip , and a port) but im using an overload which just takes hostData now. Whenever I attempt to join a server I get disconnected from the masterserver and I'm not considered to be a client on the server i want to connect to, below is the code im using in the OnGUI() function.

 for (var i : int = 0; i < hostData.Length; i++){
             if (GUI.Button(Rect(10,(100*i),200,300),"Click")){
                 print(hostData[i].ip[0].ToString());
                 Network.Connect(hostData[i]);
             }
 }

 

Am I connecting wrong when using a master server? or is there a better way of doing it? Thanks.