Allocate viewID problem

Hi, my problem is that when I shoot to a player, unity says that allocated ID 51 doesn’t exist when I call the RPC to kill the player.
I don’t understand. Player’s IDs are 1 and 50.
Sorry for my english.
PS: I’m using MasterServer to make a Lobby and than I load the level

    void OnLevelWasLoaded(int level) 
    {
        Debug.Log("level loaded");
        Spawn();
	Debug.Log("spawning");   
    }

    void Spawn()
    {
        Network.Instantiate(player, respawnPoint.transform.position, transform.rotation, 0);
    }

void Shoot()
{
.....

RaycastHit hit;
        Debug.DrawRay(RayStart.transform.position, RayStart.forward * gittata, Color.blue);
        if(Physics.Raycast(RayStart.transform.position, RayStart.forward,out hit, gittata))
        {
            if (hit.rigidbody)
            {
                hit.rigidbody.AddForceAtPosition(RayStart.forward * forza, hit.point);		
            }
			if(hit.collider)
			{
				GameObject macchiaInst = Network.Instantiate(macchia, hit.point, Quaternion.FromToRotation(Vector3.up,hit.normal),0) as GameObject;

				macchiaInst.transform.parent = hit.transform;
				Physics.IgnoreCollision(macchiaInst.collider, macchiaInst.collider);
			}
            colpito = hit.transform.tag;
            if (hit.transform.tag == "Player")
            {
                punti += 10;
				
				parentOk = null;
				Transform app = hit.transform;
				while(parentOk==null)
				{
					if(app.parent.networkView != null)
						parentOk = app.parent;
					else
						app = app.parent;
				}
				app = transform;
				Transform parentMio = null;
				while(parentMio==null)
				{
					if(app.parent.networkView != null)
						parentMio = app.parent;
					else
						app = app.parent;
				}
				NetworkViewID dati = parentMio.networkView.viewID;
				
				networkView.RPC("ApplicaDanno",parentOk.networkView.viewID.owner,dati);
				killer = dati.ToString();
     }
...
}
[RPC]
	void ApplicaDanno( NetworkViewID nv)
	{
		killer = nv.owner.ipAddress;
		GUI.Label(new Rect(10,210,250,25), nv.owner.ipAddress +" mi ha colpito ed il suo id è: " + nv);
	}

Nobody?

Are you allocating viewID yourself?

No I’m using Network.Instantiate

Nothing?