My Camera won't activate trough script

Hello Unity Users.
I’m trying to make an simple Multiplayer FPS and i want to activated my Camera trough script… I’ve made one script but this does not work.

using UnityEngine;
using System.Collections;

public class NetworkManager : MonoBehaviour {
	
	
	void Start () {
		Connect();
	}
	
	void Connect() {
		PhotonNetwork.ConnectUsingSettings( "Project LuPaLu v001" );
	}
	
	void OnGUI() {
		GUILayout.Label( PhotonNetwork.connectionStateDetailed.ToString() );
	}
	
	void OnJoinedLobby() {
		PhotonNetwork.JoinRandomRoom();
	}
	
	void OnPhotonRandomJoinFailed() {
		PhotonNetwork.CreateRoom( null );
	}
	
	void OnJoinedRoom() {
		Debug.Log("Room Joined");
		SpawnPlayer();
	}
	
	void SpawnPlayer() {
		GameObject myPlayerGO = (GameObject)PhotonNetwork.Instantiate("PlayerController 1", Vector3.zero, Quaternion.identity, 0);
		Debug.Log(myPlayerGO);
		((MonoBehaviour)myPlayerGO.GetComponent("PlayerMovement")).enabled = true;
		((MonoBehaviour)myPlayerGO.GetComponent("MouseLook")).enabled = true;
		myPlayerGO.transform.FindChild("Main Camera").gameObject.SetActive(true);
	}
	
}

Thanks for your Help.

You can not find any inactive game object using Find.

http://answers.unity3d.com/questions/52560/gameobjectfind-work-on-inactive-objects.html