Issues Activating/Deactivating User Interface Objects Unity 5 RC1.

Hi, I'm currently working on a basic menu system, in which I need to activate and deactivate different objects on the User Interface.

 using UnityEngine;
 using System.Collections;
 
 public class GameController : MonoBehaviour {
 
     //Declaration of interfaces
     public GameObject MainMenu;
     public GameObject LoadingS;
     public GameObject ConnectS;
     public GameObject ServerList;
     public GameObject GameOptions;
 
     void start(){
         MenuReset();
     }
 
     void MenuReset(){
         MainMenu.SetActive(false);
         LoadingS.SetActive(false);
         ConnectS.SetActive(false);
         ServerList.SetActive(false);
         GameOptions.SetActive(false);
     }

This is what I have written, however, when the scene starts, and the script is active, the objects containe User Interface components do not activate and deactivate. I've checked to make sure that the objects are linked to the script in the inspector, and I've tried looking on the forums, however they all point to .setactive, and it doesn't seem to be working.