Problem with multiplayer script (not done yet)

Hello everyone i get this error :

Assets/Scripts/MenuManager.cs(133,153): error CS1061: Type `MapSetting' does not contain a definition for `MapLoadName' and no extension method `MapLoadName' of type `MapSetting' could be found (are you missing a using directive or an assembly reference?)

This is line 133 in the script :

MultiplayerManager.instance.networkView.RPC("Client_LoadMultiplayerMap", RPCMode.All, MultiplayerManager.instance.CurrentMap.MapLoadName, MultiplayerManager.instance.oldprefix + 1);

And this is the whole script :

 using UnityEngine;
 using System.Collections;
 
 public class MenuManager : MonoBehaviour 
 {
     public MenuManager instance;
     
     public string CurrentMenu;
     
     public string MatchName = "";
     public string MatchPassword = "";
     public  int MatchMaxPlayers = 32;
     
     private Vector2 ScrollLobby = Vector2.zero;
     
     void Start ()
     {
         instance = this;
         CurrentMenu = "Main";
         MatchName = "Field of Battle " + Random.Range (0, 5000);
     }
     
     void FixedUpdate()
     {
         instance = this;
     }
         
     void OnGUI()
     {
         if (CurrentMenu == "Main")
             Menu_Main();
         if (CurrentMenu == "Lobby")
             Menu_Lobby();
         if (CurrentMenu == "Host")
             Menu_HostGame();
         if(CurrentMenu == "ChoMap")
             Menu_ChooseMap();
     }
 
     public void NavigateTo(string nextmenu)
     {
         CurrentMenu = nextmenu;
     }
     
     private void Menu_Main()
     {
         if (GUI.Button(new Rect(10,10,200,50), "Host Game"))
         {   
             NavigateTo("Host");
         }
         if (GUI.Button(new Rect(10,70,200,50), "Refresh"))
         {   
             MasterServer.RequestHostList("DeathMatch");
         }
         
         GUI.Label (new Rect(220,10,130,30), "Player Name");
         MultiplayerManager.instance.PlayerName = GUI.TextField (new Rect(350,10,150,30),MultiplayerManager.instance.PlayerName);
         if (GUI.Button(new Rect(510,10,100,30), "Save Name"))
         {   
             PlayerPrefs.SetString("PlayerName", MultiplayerManager.instance.PlayerName);
         }
         
         GUILayout.BeginArea(new Rect(Screen.width - 400, 0, 400, Screen.height), "Server List", "Box");
         GUILayout.Space(20);        
         foreach(HostData match in MasterServer.PollHostList())
         {
             GUILayout.BeginHorizontal("Box");
             
             GUILayout.Label(match.gameName);
             if(GUILayout.Button ("Connect"))
             {    
                Network.Connect(match);
             }    
                 
             GUILayout.EndHorizontal();
         }
         
         GUILayout.EndArea();
     }
     
     private void Menu_HostGame()
     {
         //Button Host Game
         if (GUI.Button(new Rect(10,10,200,50), "Back"))
         {   
             NavigateTo("Main");
         }
         
         if (GUI.Button(new Rect(10,60,200,50), "Start Server"))
         {
             MultiplayerManager.instance.StartServer(MatchName, MatchPassword, MatchMaxPlayers);
         }
             if (GUI.Button(new Rect(10,160,200,50), "Choose Map"))
         {
             NavigateTo("ChoMap");
         }
             
         GUI.Label (new Rect(220,10,130,30), "Match Name");
         MatchName = GUI.TextField (new Rect(400,10,200,30),MatchName);
         
         GUI.Label (new Rect(220,50,130,30), "Match Password");
         MatchPassword = GUI.PasswordField(new Rect(400,50,200,30),MatchPassword, '*');
         
         GUI.Label (new Rect(220,90,130,30), "Match Max Players");
         GUI.Label (new Rect(400,90,200,30), MatchMaxPlayers.ToString());
         MatchMaxPlayers = Mathf.Clamp(MatchMaxPlayers, 8, 32);
         
         if (GUI.Button(new Rect(425,90,25,30), "+"))
             MatchMaxPlayers += 2;
         if (GUI.Button(new Rect(450,90,25,30), "-"))
             MatchMaxPlayers -= 2;
         
         GUI.Label (new Rect(650,10,130,30), MultiplayerManager.instance.CurrentMap.MapName);
     }
     
     private void Menu_Lobby()
     {
         ScrollLobby = GUILayout.BeginScrollView(ScrollLobby, GUILayout.MaxWidth(200));
         
         foreach(MPPlayer pl in MultiplayerManager.instance.PlayerList)
         {    
             GUILayout.Box(pl.PlayerName);
         }    
         
         GUILayout.EndScrollView();
         
         GUI.Box(new Rect(250, 10, 200, 40), MultiplayerManager.instance.CurrentMap.MapName);
         
         if(Network.isServer)
         {    
             if(GUI.Button(new Rect(Screen.width - 200, Screen.height - 80, 200, 40), "Start Match"))
             { 
                 MultiplayerManager.instance.networkView.RPC("Client_LoadMultiplayerMap", RPCMode.All, MultiplayerManager.instance.CurrentMap.MapLoadName, MultiplayerManager.instance.oldprefix + 1);
                MultiplayerManager.instance.oldprefix += 1;
                MultiplayerManager.instance.IsMatchStarted = true;
             }
         }    
         if(GUI.Button(new Rect(Screen.width - 200, Screen.height - 40, 200, 40), "Disconnect"))
         {
             Network.Disconnect();
         }
     }    
     
     private void Menu_ChooseMap()
     {
         if (GUI.Button(new Rect(10,10,200,50), "Back"))
         {   
             NavigateTo("Host");
         }
         
         GUI.Label(new Rect(220, 10, 130, 30), "Choose Map");
         GUILayout.BeginArea(new Rect(350, 10, 150, Screen.height));
         
         foreach(MapSetting map in MultiplayerManager.instance.MapList)
         {
             if(GUILayout.Button(map.MapName))
             {
                 NavigateTo("Host");
                 MultiplayerManager.instance.CurrentMap = map;
             }
         }
         
         GUILayout.EndArea();
         }
     
     void OnServerInitialized()
     {
         NavigateTo("Lobby");    
     }
     
     void OnConnectedToServer()
     {
         NavigateTo("Lobby");
     }
     
     void OnDisconnectedFromServer(NetworkDisconnection info)
     {
         NavigateTo("Main");
     }
 }