Problem with Intantiate using uLink!

Hey guys!

I'm using uLink, using a authorotative server for my "game", and I'm getting errors in the console. What I'm trying to achieve is making a script to Instatiate objects from the server side!

I based my script on this one that uLink provides to instatiante players on server start

 using uLink;
 using UnityEngine;
 using System.Collections;
 
 
 public class Spawner : uLink.MonoBehaviour {
     
     //************************************************************************************************
     // Owner is the actual player using the client Scene. It has animations + camera.  
     // OwnerInit.cs connects the owner to the camera.
     //
     // Proxy is what appears on the the opponent players computers, It has animations but no camera connection.
     //
     // Creator is instansiated in the server and it has no camera. It has the animation script, but it has been 
     // deactivated.  Just turn it on if you really do want to see animations on the server.
     //************************************************************************************************
     
     public GameObject proxyPrefab = null;
     public GameObject ownerPrefab = null;
     public GameObject creatorPrefab = null;
     public GameObject spawnLocation = null;
     
     void uLink_OnPlayerConnected(uLink.NetworkPlayer player){
         string loginName;
         
         if(!player.loginData.TryRead<string>(out loginName)) loginName = "Nameless";
         
         //Instantiates an avatar for the player connecting to the server
         //The player will be the "owner" of this object. Read the manual chapter 7 for more
         //info about object roles: Creator, Owner and Proxy.
         uLink.Network.Instantiate(player, proxyPrefab, ownerPrefab, creatorPrefab, spawnLocation.transform.position, spawnLocation.transform.rotation, 0, loginName);
     }
     
     
 }

And this is the script that I wrote so far, but keep getting errors. using uLink; using UnityEngine; using System.Collections;

 public class CrateSpawner : uLink.MonoBehaviour {
 
     public GameObject ownerCrate = null;
     public GameObject proxyCrate = null;
     public GameObject creatorCrate = null;
     public GameObject spawnCrateLocation = null;
 
     // Use this for initialization
     void Start () {
 
         uLink.Network.Instantiate (ownerCrate, proxyCrate, creatorCrate, spawnCrateLocation.transform.position, spawnCrateLocation.transform.rotation, 0);
 
     }
     
     // Update is called once per frame
     void Update () {
     
     }
 }

These are the errors that appear on the console:

Assets/Scripts/CrateSpawner.cs(15,31): error CS1502: The best overloaded method match for uLink.Network.Instantiate(UnityEngine.GameObject, UnityEngine.GameObject, UnityEngine.Vector3, UnityEngine.Quaternion, uLink.NetworkGroup, params object[])' has some invalid arguments Assets/Scripts/CrateSpawner.cs(15,31): error CS1503: Argument #3' cannot convert UnityEngine.GameObject' expression to type UnityEngine.Vector3'

I've tryed different stuff in the code and searched all over the internet with no luck, so I hope some of you guys can help me!

Thank you!