Interpolating Positions, Networking

I was just using the Network View with the transform as observed. But it´s laggy so I tried to use RPC and interpolate each position.

 //interpolation
  var myMove : Vector3 = Vector3.zero;
  var lastPos : Vector3 = Vector3.zero;
  var cachePos : Vector3 = Vector3.zero;
  var minMove : float = 0.01;
  var curMoveValue : float = 0;

  function Update(){
     if(networkView.isMine)  
   {
 
     //Sends position if I have move

     if(curMoveValue > minMove)
     {
         networkView.RPC("SetPosition", RPCMode.OthersBuffered, transform.position);
         cachePos = transform.position;
         
     }
     myMove = transform.position - cachePos;
     curMoveValue = myMove.magnitude;
     
   }
     else
   {
 
     //We have move!
     if(transform.position != lastPos)
     {    
         myMove = lastPos - transform.position;
         if(myMove.magnitude  > 1)
         {
         var controller : CharacterController = GetComponent(CharacterController);
         myMove = myMove.normalized;
         controller.Move(myMove*moveSpeed*Time.deltaTime);
         }
         else
         {
             transform.position = lastPos;
         }
     }

It works fine, I ask you if there is a better way to do it. Anyway, the enmies are running the same code for syncing their positions but the problemen is when I istantiate new enemies in the scene. The positions of the new enemies between server and client do not match!

Im using this to create the new enemies:

    function Update ()
   {
    if(Network.isServer)
    {
         if(myReady)
     {
         Crear();
     }
    }
   }

   function Crear()
  {
   myReady=false;
 
   yield WaitForSeconds(delayTime);
   var myenemy : Transform = Network.Instantiate(enemyTrans, transform.position, Quaternion.identity, 0) as Transform;
 
   myReady=true;
  }

But it doesnt work. Im also reciving this error: Could't invoke RPC function 'SetPosition' because the networkView 'AllocatedID: 3' doesn't exist

Help pls!