LoadLevel Doesn't have script

i have a main menu scene, that goes to the game scene without problems, but when i go back to the menu, the menu script doesn’t show. Any solutions?

Main Menu

private var canShow : boolean = false;
var Skin : GUISkin;

private var Name : String;
var playerName : String;

private var lastScore : int;
private var myscore : int;

function Awake()
{
	Name = PlayerPrefs.GetString("MyName");
	playerName = Name;
	
	myscore = PlayerPrefs.GetInt("MyScore"); 
	lastScore = myscore;
}

function Update()
{
	Go();
}

function OnGUI()
{
	//GUI.skin = Skin;

	if(canShow == true)
	{
		if(GUI.Button(Rect(Screen.width/2 - 200, Screen.height/2, 400, 100), "New Game"))
		{
			Application.LoadLevel(1);
		}
		
		if(GUI.Button(Rect(Screen.width/2 - 200, Screen.height/2 + 100, 400, 100), "Quit Game"))
		{
			Application.Quit();
		}
		
		GUI.Box(Rect(0, 0, 200, 150),"Welcome Back");
		playerName = GUI.TextField(Rect(50, 25, 100, 25), playerName, 10);
		
		PlayerPrefs.SetString("MyName", playerName);
		
		
		GUI.Box(Rect(50, 75, 100, 25), "Last Score");
		GUI.Box(Rect(50, 100, 100, 25), lastScore.ToString());
	}
}

function Go()
{
	yield WaitForSeconds(2);
	canShow = true;
}

Pause

private var paused : boolean = false;

function Awake()
{
Screen.lockCursor = true;
}

function Update()
{
if(Input.GetButtonDown(“Pause”))
{
if(Screen.lockCursor == false)
{
Screen.lockCursor = true;
Time.timeScale = 1.0;

		MouseLook.sensitivityX = normalSensitivity;
		MouseLook.sensitivityY = normalSensitivity;
		
		paused = false; 
	}
	
	else
	
	{
		Screen.lockCursor = false;
		Time.timeScale = 0.0;
		
		MouseLook.sensitivityX = 0;
		MouseLook.sensitivityY = 0;
		
		paused = true;
	}		
}

}

function OnGUI()
{
if(paused == true)
{
if(GUI.Button(Rect(Screen.width/2 - 200, Screen.height/2, 400, 100), “Main Menu”))
{
Application.LoadLevel(0);
}

	if(GUI.Button(Rect(Screen.width/2 - 200, Screen.height/2 + 100, 400, 100), "Quit Game"))
	{
		Application.Quit();
	}

	GUI.Box(Rect(Screen.width/2 - 100, Screen.height/2 - 100, 200, 50), "Paused");	
}

}

if(paused == true)
{
if(GUI.Button(Rect(Screen.width/2 - 200, Screen.height/2, 400, 100), “Main Menu”))
{
Application.LoadLevel(0);
}
}

Needs to be

if(paused == true)
{ 
if(GUI.Button(Rect(Screen.width/2 - 200, Screen.height/2, 400, 100), "Main Menu"))
{ 
Time.timeScale = 1.0;
Application.LoadLevel(0); 
}
}

or else it will remain “paused.” Note that the time scale would still be 0 at the main menu.