Why is my MouseLook script not letting me look up?

 //MouseLook
 using UnityEngine;
 using System.Collections;
 
 [AddComponentMenu("Camera-Control/Mouse Look")]
 public class MouseLook : MonoBehaviour {
 
     public enum RotationAxes { MouseXAndY = 0, MouseX = 1, MouseY = 2 }
     public RotationAxes axes = RotationAxes.MouseXAndY;
     public float sensitivityX = 15f;
     public float sensitivityY = 15f;
 
     public float minimumX = -360f;
     public float maximumX = 360f;
 
     public float minimumY = 0f;
     public float maximumY = 0f;
 
     float rotationY = 0f;
 
     void Update ()
     {
         if (axes == RotationAxes.MouseXAndY)
         {
             float rotationX = transform.localEulerAngles.y + Input.GetAxis("Mouse X") * sensitivityX;
 
             rotationY += Input.GetAxis("Mouse Y") * sensitivityX;
             rotationY = Mathf.Clamp(rotationY, minimumY, maximumY);
 
             transform.localEulerAngles = new Vector3(-rotationY, rotationX, 0);
         }
         else if (axes == RotationAxes.MouseX)
         {
             transform.Rotate(0, Input.GetAxis("Mouse X") * sensitivityX, 0);
         }
         else
         {
             rotationY += Input.GetAxis("Mouse Y") * sensitivityY;
             rotationY = Mathf.Clamp(rotationY, minimumY, maximumY);
 
             transform.localEulerAngles = new Vector3(-rotationY, transform.localEulerAngles.y,0);
 
         }
     }
 
     void Start()
     {
         if (GetComponent<Rigidbody>())
             GetComponent<Rigidbody>().freezeRotation = true;
     }
 }
 
 
 //NetworkManager
 using UnityEngine;
 using System.Collections;
 
 public class NetworkManager : MonoBehaviour {
     
     
     public GameObject standbyCamera;
     SpawnSpot[] spawnSpots;
 
     void Start () {
         spawnSpots = GameObject.FindObjectsOfType<SpawnSpot>();
         Connect();
 
     }
 
 void Connect()
     {
         PhotonNetwork.ConnectUsingSettings("MultiFPS v001");
     }
 
     void OnGUI()
     {
         GUILayout.Label(PhotonNetwork.connectionStateDetailed.ToString());
     }
 
     void OnJoinedLobby()
     {
         Debug.Log("OnJoinedLobby");
         PhotonNetwork.JoinRandomRoom();
     }
 
     void OnPhotonRandomJoinFailed()
     {
         Debug.Log("OnPhotonRandomJoinFailed");
         PhotonNetwork.CreateRoom( null );
     }
 
     void OnJoinedRoom()
     {
         Debug.Log("OnJoinedRoom");
 
         SpawnMyPlayer();
     }
 
     void SpawnMyPlayer()
     {
         if(spawnSpots == null)
         {
             Debug.LogError("WTF!?!?!");
             return;
         }
 
         SpawnSpot mySpawnSpot = spawnSpots[ Random.Range ( 0, spawnSpots.Length) ];
         GameObject myPlayerGO = (GameObject)PhotonNetwork.Instantiate("PlayerController", mySpawnSpot.transform.position, mySpawnSpot.transform.rotation, 0);
         standbyCamera.SetActive(false);
 
         //((MonoBehaviour)myPlayerGO.GetComponent("FirstPersonController")).enabled = true;
         //((MonoBehaviour)myPlayerGO.GetComponent("MouseLook")).enabled = true;
         myPlayerGO.transform.FindChild("FirstPersonCharacter").gameObject.SetActive(true);
         ((MonoBehaviour)myPlayerGO.GetComponent<MouseLook>()).enabled = true;
     }
 }