NullReferenceException: Object reference not set to an instance of an object

I cant really understand why do i get this error:

 NullReferenceException: Object reference not set to an instance of an object
 SetupServer.Awake () (at Assets/Scripts/SetupServer.js:29)

Entire code is:

  var playerPref : Transform;//Player!
     
     public var gameName = "Horror Multiplayer Game";//Game Name
     
     var playerName : String = "";//Our player name,not really matters right now.
     
     var chatScript : FPSChat;//Define our chat script
     
     public var playerList = new ArrayList();//Define our playerlist - for server only.
     function Awake(){
         
         Network.isMessageQueueRunning = true;
         playerName = PlayerPrefs.GetString("playerName");
         chatScript = GetComponent(FPSChat);
         Screen.lockCursor=true;    
         
         if(Network.isServer){
         
             chatScript.ShowChatWindow();
             
             networkView.RPC ("TellOurName", RPCMode.AllBuffered, playerName);
             
             for (var go : GameObject in FindObjectsOfType(GameObject)){
                 go.SendMessage("OnNetworkLoadedLevel", SendMessageOptions.DontRequireReceiver);    
             }        
             MasterServer.RegisterHost(gameName, PlayerPrefs.GetString("playerName")+"'s game");
                 
         }else if(Network.isClient){
             chatScript.ShowChatWindow();
                     
             networkView.RPC ("TellOurName", RPCMode.AllBuffered, playerName);
             
             for (var go : GameObject in FindObjectsOfType(GameObject)){
                 go.SendMessage("OnNetworkLoadedLevel", SendMessageOptions.DontRequireReceiver);    
             }    
             
             
             
         }else{
             //How did we even get here without connection?
             Screen.lockCursor=false;    
             Application.LoadLevel((Application.loadedLevel-1));        
         }
     }