UNet. Messaging not work. Please help.

Hi, i want implement automatical room searching in matchmaker. I found or create room. But when i try send message i have error.

Server to clint error:

Empty player list given to NetworkServer.Destroy(), nothing to do. UnityEngine.Networking.NetworkIdentity:UNetStaticUpdate()

Client to Server error:

Channels not initialized sending on id '0 UnityEngine.Networking.NetworkConnection:Send(Int16, MessageBase) UNet:OnGUI() (at Assets/UNet.cs:151)

This is my dirty code, more experiments there :)

 using UnityEngine;
 using System.Collections;
 using UnityEngine.Networking;
 using UnityEngine.Networking.Match;
 using UnityEngine.Networking.Types;
 using UnityEngine.Networking.NetworkSystem;
 
 
 public class UNet : NetworkManager {
 
     NetworkConnection clientConnection;
     NetworkConnection serverConnection;
 
     [SerializeField]
     NetworkLobbyPlayer lobbyPlayer;
 
     void Start () {
         StartMatchMaker();
         matchMaker.ListMatches(0, 20, "", OnMatchList);
         Debug.Log("Start");
     }
 
     void OnMatchList(ListMatchResponse matchList){
         Debug.Log("OnMatchListr");
         foreach(MatchDesc md in matchList.matches){
             Debug.Log(string.Format("roomName = {0}, maxSize = {1}, currentSize = {2}",md.name, md.maxSize, md.currentSize));
             if(md.currentSize > 0 && md.currentSize < md.maxSize){
                 matchMaker.JoinMatch(md.networkId, "", OnMatchJoinedAsClient);
                 return;
             }
         }
         CreateMatch();
     }
 
     public void OnMatchJoinedAsServer(JoinMatchResponse matchJoin){
         //base.OnMatchJoined(matchJoin);
         Debug.Log("OnMatchJoin as Server");
         //StartServer();
         StartHost();
     }
 
     public void OnMatchJoinedAsClient(JoinMatchResponse matchJoin){
         //base.OnMatchJoined(matchJoin);
         Debug.Log("OnMatchJoin as Client");
         StartClient();
     }
 
     void CreateMatch(){
         CreateMatchRequest create = new CreateMatchRequest();
         create.name = "room1";
         create.size = 2;
         create.advertise = true;
         create.password = "";
         NetworkManager.singleton.matchMaker.CreateMatch(create, OnMatchCreate);
     }
 
     public void OnMatchCreate(CreateMatchResponse matchResponse)
     {
         if (matchResponse.success)
             matchMaker.JoinMatch(matchResponse.networkId, "", OnMatchJoinedAsServer);
     }
 
     public override void OnStartServer ()
     {
         Debug.Log ("START SERVER");
         base.OnStartServer ();
         NetworkServer.RegisterHandler(33, OnServer);
         //lobbyPlayer.SendReadyToBeginMessage();
     }
 
     public override void OnStartHost ()
     {
         Debug.Log ("START HOST");
         base.OnStartServer ();
         NetworkServer.RegisterHandler(33, OnServer);
         //lobbyPlayer.SendReadyToBeginMessage();
     }
 
     public override void OnStartClient (NetworkClient client)
     {
         Debug.Log ("START CLIENT");
         base.OnStartClient (client);
         client.RegisterHandler(NetworkMessagesTypes.SERVER_SWITCH, OnServerSwitch);
         client.RegisterHandler(33, OnClient);
         //lobbyPlayer.SendReadyToBeginMessage();
     }
 
     public override void OnServerConnect (NetworkConnection conn)
     {
         Debug.Log ("OnServerConnect");
         //base.OnServerConnect (conn);
         clientConnection = conn;
     }
 
     public override void OnClientConnect (NetworkConnection conn)
     {
         Debug.Log ("OnClientConnect");
         //base.OnServerConnect (conn);
         serverConnection = conn;
         //ClientScene.Ready(conn);
         //ClientScene.AddPlayer(0);
     }
 
     // called when a client is ready
     public virtual void OnServerReady(NetworkConnection conn)
     {
         Debug.Log ("OnServerReady");
         NetworkServer.SetClientReady(conn);
     }
 
     public virtual void OnServerAddPlayer(NetworkConnection conn, short playerControllerId)
     {
         Debug.Log ("OnServerAddPlayer");
         NetworkServer.AddPlayerForConnection(conn, new GameObject(), playerControllerId);
     }
     
     void OnServerSwitch(NetworkMessage msg){
         Debug.Log ("SWITCH SERVER");
         StopClient();
         client.handlers.Clear();
         StartServer();
     }
     
     void OnClient(NetworkMessage msg){
         Debug.Log (msg.ReadMessage<NetMSG>().text2);
         msg.conn.Send(33, new NetMSG());
     }
     void OnServer(NetworkMessage msg){
         Debug.Log (msg.ReadMessage<NetMSG>().text);
         msg.conn.Send(33, new NetMSG());
     }
 
     void ServerDisconnect(){
         Debug.Log("ServerDisconnect");
         clientConnection.Send(NetworkMessagesTypes.SERVER_SWITCH, new NetMSG());
         StopServer();
     }
 
     public override void OnStopServer ()
     {
         Debug.Log("OnStopServer");
         base.OnStopServer ();
     }
 
     void OnGUI(){
         if(GUILayout.Button("SwitchServer")){
             ServerDisconnect();
         }
 
         if(GUILayout.Button("Send To Client")){
             clientConnection.Send(33, new NetMSG());
         }
 
         if(GUILayout.Button("Send To Server")){
             serverConnection.Send(33, new NetMSG());
         }
 
         if(GUILayout.Button("Send To ALL")){
             NetworkServer.SendToAll(33, new NetMSG());
         }
     }
 
     void OnApplicationQuit(){
         NetworkManager.singleton.matchMaker.DestroyMatch(matchInfo.networkId, OnMatchDestoy);
         StopHost();
         StopServer();
         Network.Disconnect();
     }
 
     void OnMatchDestoy(BasicResponse response){
         Debug.Log("OnMatchDestoy");
     }
 }
 
 public class NetworkMessagesTypes : MsgType {
     public const short SERVER_SWITCH = 50;
 
 }

Where is ERROR? How create correct automatical matchmaker?