Unity Multiplayer 5.1 Chat almost works... Object reference

Attempting to figure out the new [ClientRpc] system. I got it to work properly on my Movement animation scripts but it wants nothing to do with my chat scripts. Here is what I have:

public List<string> chatHistory = new List<string>();
private string msg = "";
private string username = "Username here";
private bool submit;

private void OnGUI(){
if (submit) {
Bottom ();
}
private void Bottom(){
msg = GUI.TextField(chatBox, msg);//This makes messages appear above chat input bar
if (GUI.Button (sendButton, "Send")) {
msg = username + ": " + msg;
SendMessage();
}

GUILayout.Space (250);
for (int i = chatHistory.Count - 1; i >= 0; i--) {
GUILayout.Label (chatHistory);
}
}
private void SendMessage(){
if(!string.IsNullOrEmpty(msg.Trim())){
//GetComponent<NetworkView>().RPC("ChatMessage", RPCMode.AllBuffered, new object[]{msg});
RpcChatMessage(msg);
msg = "";
}

[ClientRpc]//Remote Procedure Call
public void RpcChatMessage(string message){
chatHistory.Add(message);
}
}