c# - error de conexión de unidad smartfoxserver

unity3d

Question

Estoy usando Smartfoxserver api en Unity3d, estaba funcionando bien antes de recuperar mi macbook, pero ahora da un error de conexión como el siguiente:

Http error creating http connection: System.Net.Sockets.SocketException: Connection refused
  at System.Net.Sockets.Socket.Connect (System.Net.EndPoint remoteEP, Boolean requireSocketPolicy) [0x00000] in <filename unknown>:0 
  at System.Net.Sockets.Socket.Connect (System.Net.EndPoint remoteEP) [0x00000] in <filename unknown>:0 
  at System.Net.Sockets.TcpClient.Connect (System.Net.IPEndPoint remote_end_point) [0x00000] in <filename unknown>:0 
  at System.Net.Sockets.TcpClient.Connect (System.Net.IPAddress[] ipAddresses, Int32 port) [0x00000] in <filename unknown>:0 
UnityEngine.Debug:Log(Object)
SFS2X_Connect:OnConnection(BaseEvent) (at Assets/SFS2X_Connect.cs:2758)
Sfs2X.Core.EventDispatcher:DispatchEvent(BaseEvent)
Sfs2X.SmartFox:ProcessEvents()
SFS2X_Connect:Update() (at Assets/SFS2X_Connect.cs:2764)

aquí está el código de conexión:

using UnityEngine;
using UnityEngine.Networking;
using UnityEngine.UI;
using System.Collections;
using Sfs2X;
using Sfs2X.Core;

    public class SFS2X_Connect : MonoBehaviour {

        public string Host = "127.0.0.1";

        [Tooltip("TCP port listened by the SmartFoxServer 2X instance; used for regular socket connection in all builds except WebGL")]
        public int TcpPort = 9933;

        [Tooltip("WebSocket port listened by the SmartFoxServer 2X instance; used for in WebGL build only")]
        public int WSPort = 8888;

        [Tooltip("Name of the SmartFoxServer 2X Zone to join")]
        public string Zone = "examplezone";


    SmartFox sfs;

          sfs = new SmartFox ();

          sfs.ThreadSafeMode = false;

         sfs.AddEventListener (SFSEvent.CONNECTION, OnConnection);

        ConfigData cfg = new ConfigData();

        cfg.Host = Host;
        cfg.Port = TcpPort;
        cfg.Zone = Zone;

        sfs.Connect (cfg);
    }

He eliminado y reimportado smartfox.dll, pero sigue siendo el mismo

¿Que puedo hacer?

Nota: creo un nuevo proyecto e importo smartfoxserver, está conectado al servidor