get_version can only be called from the main thread.

So I am using parse.com(a backhand database provider, made by facebook) for my unity project. I got stuck with a serious problem. Here is the explanation;

as long as i throw out my Synchronization codes from my game everything works fine but i need it in order to make the player sync their data to the server.

So here is the error im an getting:

 get_version can only be called from the main thread.
 Constructors and field initializers will be executed from the loading thread when loading a scene.
 Don't use this function in the constructor or field initializers, instead move initialization code to the Awake or Start function.

And here is my user.cs code:

 using UnityEngine;
 using System.Collections;
 using System.Threading;
 using Parse;
 
 public class User : MonoBehaviour {
     
     public bool isAuthenticated = false;
     public string userName = null;
     public int level;
     public int exp;
     public int money;
     public GoLobby golobby;
     public Sync sync;
     public bool isGoLobbyEnabled = false;
     
 
     void Awake ()
     {
         DontDestroyOnLoad(this.gameObject);
     }
     
 
     
     void OnGUI ()
     {
         if (isAuthenticated == true) 
         {
             GUI.Box (new Rect (0,0,250,100), userName);
             //GUI.Label (new Rect (0, 15, 400, 100), "Username: " + userName);
             GUI.Label (new Rect (0, 10, 400, 100), "Level: " + level);
             GUI.Label (new Rect (0, 25, 400, 100), "Experience: " + exp);
             GUI.Label (new Rect (0, 40, 400, 100), "Money:" + money);
             if (GUI.Button (new Rect (178, 67, 70, 30), "Sync")) 
             {
                 sync.SyncToServer (userName, level, exp, money);
             }
         }
     }
 
     
     public void LoginUser(string username, string password)
     {
 
         var query = ParseObject.GetQuery("Member")
             .WhereEqualTo("Username", username)
             .WhereEqualTo("Password", password);
         query.FirstOrDefaultAsync().ContinueWith(t =>
                                        {
             ParseObject result = t.Result;
             //print (result);
             string playerName = result.Get<string>("Username");
             string playerPassword = result.Get<string>("Password");
             int playerLevel = result.Get<int>("Level");
             int playerexp = result.Get<int>("Experience");
             int playerMoney = result.Get<int>("Money");
             isAuthenticated = true;
             userName = playerName;
             money = playerMoney;
             exp = playerexp;
             sync.SyncToServer (userName, level, exp, money);
             isGoLobbyEnabled = true;
             GoLobby();
         });
     }
 
 void GoLobby()
     {
         if (isGoLobbyEnabled == true) {
             Application.LoadLevel ("Lobby");
         }
     }
 }
 

here is my sync.cs script:

 using UnityEngine;
 using System.Collections;
 using Parse;
 
 public class Sync : MonoBehaviour {
 
 
     void Awake ()
     {
         DontDestroyOnLoad(this.gameObject);
     }
 
     public void SyncToServer (string username, int level, int exp, int money)
     {
         var query2 = ParseObject.GetQuery ("Member")
             .WhereEqualTo ("Username", username);
         query2.FirstAsync ().ContinueWith (t =>
                                            {
             ParseObject obj = t.Result;
             Debug.Log (obj.ObjectId); //Works fine
             obj["Level"] = level;
             obj["Experience"] = exp;
             obj["Money"] = money;
             obj.SaveAsync();
         });
     }
 }