Problems with pause & main menu. PLEASE HELP :(

I have now encountered a problem with my pause menu script that I got of a different website and modified a bit. I created a main-menu, and there is a button on the pause menu that says "return to main menu" This all works great, but there is one problem. If i load the game, click "play" on the main menu, then pause the game, click return to main menu, and then click Play again, My player can no longer move. He can lood up and down, left and right, and he can turn his flashlight on and off using the F button, but he cannot move around. Please help, this is the coding, (by the way I have the Player controlling both the X and Y axis of the mouse, not the main camera.

 var skin : GUISkin;
 var buttonOutlineAndTextColor = Color.white;
 var creditIcons : Texture[];
 var credits : String[] = ["Team Free Range."];
 var loadMainMenu : String;
 
 private var savedTimeScale : float;
 private var pauseFilter;
 private var currentPage : Page;
 private var toolbarInt : int = 0;
 private var toolbarStrings : String[] = ["Audio", "Graphics"];
 private var firstPersonControllerCamera;
 
 enum Page
 {
 None, Main, Options, Credits
 }
 
 function Start()
 { 
 Screen.showCursor = false;
 Screen.lockCursor = true;
 }
 
 function LateUpdate()
 {
 if (Input.GetKeyDown("escape"))
 {
 switch (currentPage)
 {
 case Page.None : PauseGame();
 break;
 
 case Page.Main : UnPauseGame();
 break;
 
 default : currentPage = Page.Main;
 }
 }
 }
 
 function OnGUI()
 {
 if (skin != null)
 {
 GUI.skin = skin;
 }
 
 if (IsGamePaused())
 {
 GUI.color = buttonOutlineAndTextColor;
 
 switch (currentPage)
 {
 case Page.Main: PauseMenu();
 break;
 
 case Page.Options: ShowToolbar();
 break;
 
 case Page.Credits: ShowCredits();
 break;
 }
 }
 }
 
 function ShowToolbar()
 {
 GUI.Box(Rect(0, 0, Screen.width, Screen.height), "");
 GUI.Box(Rect(0, 0, Screen.width, Screen.height), "");
 GUI.Box(Rect(0, 0, Screen.width, Screen.height), "");
 GUI.Box(Rect(0, 0, Screen.width, Screen.height), "");
 GUI.Box(Rect(0, 0, Screen.width, Screen.height), "");
 GUI.Box(Rect(0, 0, Screen.width, Screen.height), "");
 GUI.Box(Rect(0, 0, Screen.width, Screen.height), "");
 GUI.Box(Rect(0, 0, Screen.width, Screen.height), "");
 GUI.Box(Rect(0, 0, Screen.width, Screen.height), "");
 GUI.Box(Rect(0, 0, Screen.width, Screen.height), "");
 
 BeginPage(400, 200);
 
 toolbarInt = GUILayout.Toolbar (toolbarInt, toolbarStrings);
 
 switch (toolbarInt)
 {
 case 0 : VolumeControl();
 break;
 
 case 1 : Qualities();
 QualityControl();
 break;
 }
 
 if (GUILayout.Button("Back"))
 {
 currentPage = Page.Main;
 }
 
 EndPage();
 }
 
 function ShowCredits()
 {
 GUI.Box(Rect(0, 0, Screen.width, Screen.height), "");
 GUI.Box(Rect(0, 0, Screen.width, Screen.height), "");
 GUI.Box(Rect(0, 0, Screen.width, Screen.height), "");
 GUI.Box(Rect(0, 0, Screen.width, Screen.height), "");
 GUI.Box(Rect(0, 0, Screen.width, Screen.height), "");
 GUI.Box(Rect(0, 0, Screen.width, Screen.height), "");
 GUI.Box(Rect(0, 0, Screen.width, Screen.height), "");
 GUI.Box(Rect(0, 0, Screen.width, Screen.height), "");
 GUI.Box(Rect(0, 0, Screen.width, Screen.height), "");
 GUI.Box(Rect(0, 0, Screen.width, Screen.height), "");
 
 BeginPage(400, 200);
 
 for (var credit in credits)
 {
 GUILayout.Label(credit);
 }
 
 for (var credit in creditIcons)
 {
 GUILayout.Label(credit);
 }
 
 if (GUILayout.Button("Back"))
 {
 currentPage = Page.Main;
 }
 
 EndPage();
 }
 
 function Qualities()
 {
 switch (QualitySettings.currentLevel)
 {
 case QualityLevel.Fastest:
 GUILayout.Label("Fastest");
 break;
 
 case QualityLevel.Fast:
 GUILayout.Label("Fast");
 break;
 
 case QualityLevel.Simple:
 GUILayout.Label("Simple");
 break;
 
 case QualityLevel.Good:
 GUILayout.Label("Good");
 break;
 
 case QualityLevel.Beautiful:
 GUILayout.Label("Beautiful");
 break;
 
 case QualityLevel.Fantastic:
 GUILayout.Label("Fantastic");
 break;
 }
 }
 
 function QualityControl()
 {
 GUILayout.BeginHorizontal();
 
 if (GUILayout.Button("Decrease"))
 {
 QualitySettings.DecreaseLevel();
 }
 
 if (GUILayout.Button("Increase"))
 {
 QualitySettings.IncreaseLevel();
 }
 
 GUILayout.EndHorizontal();
 }
 
 function VolumeControl()
 {
 GUILayout.Label("Use the slider to adjust the volume. Note that the volume is defaulted at 100%.");
 AudioListener.volume = GUILayout.HorizontalSlider(AudioListener.volume, 0.0, 1.0);
 }
 
 function BeginPage(width, height)
 {
 GUILayout.BeginArea(Rect((Screen.width - width) / 2, (Screen.height - height) / 2, width, height));
 }
 
 function EndPage()
 {
 GUILayout.EndArea();
 }
 
 function PauseMenu()
 {
 GUI.Box(Rect(0, 0, Screen.width, Screen.height), "");
 GUI.Box(Rect(0, 0, Screen.width, Screen.height), "");
 GUI.Box(Rect(0, 0, Screen.width, Screen.height), "");
 GUI.Box(Rect(0, 0, Screen.width, Screen.height), "");
 GUI.Box(Rect(0, 0, Screen.width, Screen.height), "");
 GUI.Box(Rect(0, 0, Screen.width, Screen.height), "");
 GUI.Box(Rect(0, 0, Screen.width, Screen.height), "");
 GUI.Box(Rect(0, 0, Screen.width, Screen.height), "");
 GUI.Box(Rect(0, 0, Screen.width, Screen.height), "");
 GUI.Box(Rect(0, 0, Screen.width, Screen.height), "");
 
 BeginPage(400, 200);
 
 if (GUILayout.Button ("Continue"))
 {
 UnPauseGame();
 }
 
 if (GUILayout.Button ("Settings"))
 {
 currentPage = Page.Options;
 }
 
 if (GUILayout.Button ("Credits"))
 {
 currentPage = Page.Credits;
 }
 
 if (GUILayout.Button ("Quit to Main Menu"))
 {
 Application.LoadLevel(0);
 }
 
 EndPage();
 }
 
 function PauseGame()
 {
 savedTimeScale = Time.timeScale;
 Time.timeScale = 0;
 AudioListener.pause = true;
 firstPersonControllerCamera = gameObject.Find("Player").GetComponent("MouseLook");
 firstPersonControllerCamera.enabled = false;
 Screen.showCursor = true;
 Screen.lockCursor = false;
 if (pauseFilter)
 {
 pauseFilter.enabled = true;
 }
 
 currentPage = Page.Main;
 }
 
 function UnPauseGame()
 {
 Time.timeScale = savedTimeScale;
 AudioListener.pause = false;
 firstPersonControllerCamera.enabled = true;
 Screen.showCursor = false;
 Screen.lockCursor = true;
 
 if (pauseFilter)
 {
 pauseFilter.enabled = false;
 }
 
 currentPage = Page.None;
 }
 
 function IsGamePaused()
 {
 return Time.timeScale == 0;
 }
 
 function OnApplicationPause (pause : boolean)
 {
 if (IsGamePaused())
 {
 AudioListener.pause = true;
 }
 }