NetworkManagerScript

using UnityEngine;
using System.Collections;

public class NetworkManagerScript : MonoBehaviour
{
    public Transform spawnObject;
    public GameObject playerPrefab;

    private string currentMenu;

    private float bttnW = 150;
    private float bttnH = 40;

    private bool Refreshing = false;
    private HostData[] hostData;

    private string gameName = "Medieval_Swords_Online";

    void Start()
    {
        currentMenu = "Multiplayer";
    }

    void Update()
    {
        if (Refreshing)
        {
            if (MasterServer.PollHostList().Length > 0)
            {
                Debug.Log(MasterServer.PollHostList().Length.ToString());
                Refreshing = false;
                hostData = MasterServer.PollHostList();
            }
        }
    }

    //Own Functions
    void startServer()
    {
        //initialize the server
        Network.InitializeServer(32, 25001, !Network.HavePublicAddress());
        MasterServer.RegisterHost(gameName, "Medieval Swords Online", "This is a beginners game");
    }

    void RefreshHostList()
    {
        MasterServer.RequestHostList(gameName);
        Refreshing = true;

    }

    void spawnPlayer()
    {
        Network.Instantiate(playerPrefab, spawnObject.position, Quaternion.identity, 0);
    }

    //Unity Server Events
    void OnServerInitialized()
    {
        //event when the server is initialized
        Debug.Log("Server Initialized!");
        spawnPlayer();
    }

    void OnMasterServerEvent(MasterServerEvent mse)
    {
        if(mse == MasterServerEvent.RegistrationSucceeded)
        {
            Debug.Log("Registered Server");
        }
    }

    void OnConnectedToServer()
    {
        spawnPlayer();
    }


    //Gui
    void OnGUI()
    {
        if (currentMenu == "Main")
            Menu_Main();

        if (currentMenu == "Multiplayer")
            Menu_Multiplayer();

    }

    void Menu_Main()
    {

    }

    void Menu_Multiplayer()
    {
        if (!Network.isClient && !Network.isServer)
        {
            if (GUI.Button(new Rect(50, 50, bttnW, bttnH), "Start Server"))
            {
                startServer();
            }

            if (GUI.Button(new Rect(50, 100, bttnW, bttnH), "Refresh"))
            {
                Debug.Log("Refreshing...");
                RefreshHostList();
            }

            GUILayout.BeginArea(new Rect(Screen.width - 500, 0, 500, Screen.height), "Server List");
            GUILayout.Space(20);
            foreach (HostData hostedGame in MasterServer.PollHostList())
            {
                GUILayout.BeginHorizontal("Box");

                GUILayout.Label(hostedGame.gameName);
                if (GUILayout.Button("Connect"))
                {
                    Network.Connect(hostedGame);
                }

                GUILayout.EndHorizontal();
            }

            GUILayout.EndArea();
        }
    }
}