Invalid URI: The hostname could not be parsed. W7 Home - YES, W7 Starter - NO. What's the problem?

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WCF

Hi there!
The point is that debugging my C# app I faced the error: UriFormatException was unhandled. I've created p2p console chat.

namespace PeerChannelBasic
{
    [ServiceContract(
        Namespace = "http://slickthought.net/peerchannel",
        CallbackContract = typeof(IPeerChannelChat))]
    public interface IPeerChannelChat
    {
        [OperationContract(IsOneWay = true)]
        void Logon(string name);

        [OperationContract(IsOneWay = true)]
        void Chat(string name, string message);

        [OperationContract(IsOneWay = true)]
        void Logoff(string name);
    }

    public interface IPeerChannelChatClient : IPeerChannelChat, IClientChannel { }
}

Program.cs :

namespace PeerChannelBasic
{
    class Program : IPeerChannelChat
    {
        static void Main(string[] args)
        {
            Console.Write("Enter your name: ");
            string member = Console.ReadLine();

            InstanceContext context = new InstanceContext(new Program());

            DuplexChannelFactory<IPeerChannelChatClient> factory = new DuplexChannelFactory<IPeerChannelChatClient>
                (context, "ChatChannel");
            IPeerChannelChatClient chatClient = factory.CreateChannel();

            IOnlineStatus onlineStatus = chatClient.GetProperty<IOnlineStatus>();
            onlineStatus.Online += new EventHandler(onlineStatus_Online);
            onlineStatus.Offline += new EventHandler(onlineStatus_Offline);

            Console.Write("Opening chat client... ");
            chatClient.Open(); // debug stops
            Console.WriteLine("OPENED");

            chatClient.Logon(member);

            while (true)
            {
                Console.Write("Say: ");
                string message = Console.ReadLine();
                if (message.ToUpper() == "QUIT") break;

                chatClient.Chat(member, message);
            }

            chatClient.Logoff(member);
            chatClient.Close();
            factory.Close();
        }

        #region OnlineStatus
        static void onlineStatus_Offline(object sender, EventArgs e)
        {
            Console.WriteLine("<<<- chatClient is OFFLINE");
        }

        static void onlineStatus_Online(object sender, EventArgs e)
        {
            Console.WriteLine("<<<- chatClient is ONLINE");
        }
        #endregion

        #region IPeerChannelChat Members
        public void Logon(string name)
        {
            Console.WriteLine("<<<-{0} JOINED", name.ToUpper());
        }

        public void Chat(string name, string message)
        {
            Console.WriteLine("{0} SAYS ---> {1}", name.ToUpper(), message);
        }

        public void Logoff(string name)
        {
            Console.WriteLine("<<<-{0} EXITED", name.ToUpper());
        }
        #endregion
    }
}

And debugging stops at chatClient.Open() with logs "Invalid URI: The hostname could not be parsed."

By the way, it should be mentioned that this code successfully works in my Windows 7 Home Edition. But in Windows 7 Starter it shows this exception.

Have you got the same experience?
Thanks in advance.