EndPointNotFoundException in WCF c#.net

hello

i have EndPointNotFoundException in wcf c#.net
where the proxy is generated dynamically. and all clients are preconnected to the server. but the problem arise when server call the client fuctions.

Code:

namespace QuBIC.VirtualCyberneticEnviornment
{
    public partial class CyberneticEnviornmentWnd:  QuBIC.Core.QuBICServiceBaseForm
    {

        private ServiceHost _CyberneticEnviornmentServiceHost;

        private bool IamconnectedtoTaskManager = false;

        public ServiceAgent MyAgent
        {
            get {
                return (ServiceAgent)_MyAgent;
            }
        }
        public CyberneticEnviornmentWnd()
        {
            InitializeComponent();
            //_ServiceAgent.Signin += new SigninDelegate(_ServiceAgent_Signin);
                      
        }
        public CyberneticEnviornmentWnd(ServiceAgentBase argMyAgent): base(argMyAgent)
        {
            InitializeComponent();
            //_ServiceAgent.Signin += new SigninDelegate(_ServiceAgent_Signin);

            grdConnections.DataSource = MyAgent.ConnectionPool.Connections;
            Title = "CyberneticEnvironment [" + argMyAgent.MyProfile.ToString() + "]";
            txtTaskMonitoringConsoleHostMachine.Text = Environment.MachineName;
            MyAgent.OnSignin += new OnSigninDelegate(MyAgent_OnSignin);
            MyAgent.UpdatedExternalMessage += new EventHandler(MyAgent_UpdatedExternalMessage);
            StartHosting();
        }

        void MyAgent_UpdatedExternalMessage(object sender, MessageEventArgs e)
        {
            SetExternalMessage(e.Message);
        }

        void MyAgent_OnSignin(ServiceProfile rmtargServiceProfile)
        {
            lblConnectionCount.Text = MyAgent.ConnectionPool.Count.ToString();
        }

        
        private void StartHosting()
        {
            _CyberneticEnviornmentServiceHost = new ServiceHost(typeof(Service));
            _CyberneticEnviornmentServiceHost.AddServiceEndpoint(typeof(IService), new NetTcpBinding(SecurityMode.None), "net.tcp://" + MyAgent.MyProfile.MyMachineProfile.ToString() + "/" + MyAgent.MyProfile.ServiceType.ToString() + "Service");
            _CyberneticEnviornmentServiceHost.Open();
        }

        private void btnConnectToTaskMonitoringConsole_Click(object sender, EventArgs e)
        {
            lblConnectionStatus.Text = "Please Wait...";
            
            ConnectToTaskMonitoringConsole();
            IamconnectedtoTaskManager = true;
            lblConnectionStatus.Text = "Connected";
            btnConnectToTaskMonitoringConsole.Enabled = false;
        }


        private void ConnectToTaskMonitoringConsole()
        {
           
            SetInternalMessage("Connecting to Task Monitoring Console");

            IService _TaskMonitoringProxy;

            _TaskMonitoringProxy = ConnectionManager.ConnectToTaskManagerConsole(txtTaskMonitoringConsoleHostMachine.Text, txtTaskMonitoringConsolePort.Text, MyAgent);

            lblConnectionStatus.Text = "Connected";
            btnConnectToTaskMonitoringConsole.Enabled = false;
            

        }


        
        internal void SetInternalActivity(string argActivity)
        {
            
            txtInternalActivity.AppendText(argActivity + Environment.NewLine); 
        }

        private void btnPingQuBIC_Click(object sender, EventArgs e)
        {
            _MyAgent.ConnectionPool[EServiceType.QuBICAgent].Ping(EServiceType.CyberneticEnvironment);
        }

        private void btnStartNewGame_Click(object sender, EventArgs e)
        {
            NewGame();
        }

        public void NewGame()
        {

            if (IamconnectedtoTaskManager == true)
            {
                DialogResult res = MessageBox.Show("Do you want to start a new game?", "Query", MessageBoxButtons.YesNo);

                switch (res)
                {
                            case DialogResult.Yes:

                       
                        MyAgent.ConnectionPool[EServiceType.QuBICAgent].RequestToPlayGame();
                        
                       // MyAgent.ConnectionPool[EServiceType.Avatar].Ping(EServiceType.CyberneticEnvironment);
                        
                       [COLOR=Red] MyAgent.ConnectionPool[EServiceType.Avatar].RequestToPlayGame();[/COLOR]                        MyAgent.ConnectionPool[EServiceType.Referee].RequestToPlayGame();
                                               
                        
                                MessageBox.Show("I have requested the game to all players and referee");
                            break;

                            case DialogResult.No:
                                 MessageBox.Show("No new game can start");
                            break;
                }
            }
            else
            {
                MessageBox.Show("Cybernetic Environment Firstly should be connect to the Task Manager");
            }
            
        }

        private void CyberneticEnviornmentWnd_Load(object sender, EventArgs e)
        {

        }

        private void groupBox1_Enter(object sender, EventArgs e)
        {

        }
    }
}