Key script not working right!

Questions & Answers
1

When I try to pick up a key in this script it doesnt.

The error is:

MissingMethodException: UnityEngine.GameObject.BackToNormal
Boo.Lang.Runtime.DynamicDispatching.MethodDispatcherFactory.ProduceExtensionDispatcher ()
Boo.Lang.Runtime.DynamicDispatching.MethodDispatcherFactory.Create ()
Boo.Lang.Runtime.RuntimeServices.DoCreateMethodDispatcher (System.Object target, System.Type targetType, System.String name, System.Object args)
Boo.Lang.Runtime.RuntimeServices.CreateMethodDispatcher (System.Object target, System.String name, System.Object args)
Boo.Lang.Runtime.RuntimeServices+c__AnonStorey15.<>m__9 ()
Boo.Lang.Runtime.DynamicDispatching.DispatcherCache.Get (Boo.Lang.Runtime.DynamicDispatching.DispatcherKey key, Boo.Lang.Runtime.DynamicDispatching.DispatcherFactory factory)
Boo.Lang.Runtime.RuntimeServices.GetDispatcher (System.Object target, System.String cacheKeyName, System.Type cacheKeyTypes, Boo.Lang.Runtime.DynamicDispatching.DispatcherFactory factory)
Boo.Lang.Runtime.RuntimeServices.GetDispatcher (System.Object target, System.Object args, System.String cacheKeyName, Boo.Lang.Runtime.DynamicDispatching.DispatcherFactory factory)
Boo.Lang.Runtime.RuntimeServices.Invoke (System.Object target, System.String name, System.Object args)
UnityScript.Lang.UnityRuntimeServices.Invoke (System.Object target, System.String name, System.Object args, System.Type scriptBaseType)
Key.Update () (at Assets/Key.js:51)

And:

MissingMethodException: UnityEngine.GameObject.TextureChange
Boo.Lang.Runtime.DynamicDispatching.MethodDispatcherFactory.ProduceExtensionDispatcher ()
Boo.Lang.Runtime.DynamicDispatching.MethodDispatcherFactory.Create ()
Boo.Lang.Runtime.RuntimeServices.DoCreateMethodDispatcher (System.Object target, System.Type targetType, System.String name, System.Object args)
Boo.Lang.Runtime.RuntimeServices.CreateMethodDispatcher (System.Object target, System.String name, System.Object args)
Boo.Lang.Runtime.RuntimeServices+c__AnonStorey15.<>m__9 ()
Boo.Lang.Runtime.DynamicDispatching.DispatcherCache.Get (Boo.Lang.Runtime.DynamicDispatching.DispatcherKey key, Boo.Lang.Runtime.DynamicDispatching.DispatcherFactory factory)
Boo.Lang.Runtime.RuntimeServices.GetDispatcher (System.Object target, System.String cacheKeyName, System.Type cacheKeyTypes, Boo.Lang.Runtime.DynamicDispatching.DispatcherFactory factory)
Boo.Lang.Runtime.RuntimeServices.GetDispatcher (System.Object target, System.Object args, System.String cacheKeyName, Boo.Lang.Runtime.DynamicDispatching.DispatcherFactory factory)
Boo.Lang.Runtime.RuntimeServices.Invoke (System.Object target, System.String name, System.Object args)
UnityScript.Lang.UnityRuntimeServices.Invoke (System.Object target, System.String name, System.Object args, System.Type scriptBaseType)
Key.Update () (at Assets/Key.js:34)

The code is in three parts the key script (obviously), the Cross-Hair and finally the door.

The Key Script:

var Length : float = 3;
 
static var HaveKey : boolean = false;
var ShowText : boolean = false;
 
var Text : String = "You picked up a key";

var FirstPersonController = GameObject;

var Crosshair = FirstPersonController;
 
var other : GameObject;
 
function Update () {
 
var hit : RaycastHit;
       
var ray : Ray = camera.ViewportPointToRay (Vector3(0.5,0.5,0));
       
var fwd = transform.TransformDirection (Vector3.forward);
 
Debug.DrawRay(transform.position, fwd * Length, Color.green);
       
        if(Physics.Raycast(ray, hit, Length))
 
        {      
               
                hitObject = hit.collider.gameObject;
               
                if(hitObject.gameObject.tag == "Key")
 
                        {
               
                                other.GetComponent(Crosshair).TextureChange();
               
                                if(Input.GetKeyUp(KeyCode.E))
                                {
                       
                                        GetKey();
                                        Destroy(hitObject);
                                       
                       
                                }
                               
                               
                        }
               
                        else if(hitObject.gameObject.tag == "Untagged")
               
                        {
                                other.GetComponent(Crosshair).BackToNormal();
                        }
 
                }
       
        else if(!Physics.Raycast(transform.position, transform.forward, hit, Length))
        {
                other.GetComponent(Crosshair).BackToNormal();
        }
       
       
 
}
 
function GetKey(){
 
        HaveKey = true;
 
        ShowText = true;
       
        yield WaitForSeconds(3);
       
        ShowText = false;
}
 
function OnGUI(){
 
if(ShowText)
{
        GUI.Label(Rect(Screen.width /2 -62.5, Screen.height /2 + 50, 200, 100), Text);
}
 
}

THE CROSS-HAIR SCRIPT:

var CrosshairTexture : Texture2D;
 
var UseTexture : Texture2D;
 
var NormalTexture : Texture2D;
     
var ShowCrosshair : boolean = true;
 
var CanChange : boolean = false;
         
function Start()
{      
        Screen.lockCursor = true;
}
         
function OnGUI()
{
        if(ShowCrosshair == true)
        {
        GUI.Label(Rect((Screen.width - CrosshairTexture.width) /2, (Screen.height -
                        CrosshairTexture.height) /2, CrosshairTexture.width, CrosshairTexture.height), CrosshairTexture);
        }
 
}
 
 
function OnTriggerEnter(other : Collider)
{
        if(other.gameObject.tag == "Door")
        {
                CanChange = false;
       
                CrosshairTexture = UseTexture;
       
        }
 
}
 
function OnTriggerExit(other : Collider)
{
        if(other.gameObject.tag == "Door")
        {
                CanChange = true;
       
                CrosshairTexture = NormalTexture;
               
               
        }
 
}
 
function TextureChange(){
 
if(!CanChange)
{
 
CrosshairTexture = UseTexture;
 
CanChange = true;
 
}
 
}
 
function BackToNormal(){
 
if(CanChange)
{
 
CanChange = false;
 
CrosshairTexture = NormalTexture;
}
 
}

LOCKED DOOR SCRIPT:

var IsOpen : boolean = false;
 
var CanOpen : boolean = false;
 
var NeedKey : boolean = true;
 
//Audios:
 
var Locked : AudioClip;
 
var Open : AudioClip;
 
//Other:
 
var Volume : float = 0.5;
 
var KeyScript : GameObject;
 
 
 
 
function Start () {
audio.volume = Volume;
}
 
function Update () {
 
 
if(Input.GetKeyUp(KeyCode.E) && !IsOpen && CanOpen && !NeedKey)
 
{
        Opening();
        IsOpen = true;
        audio.clip = Open;
       
        audio.Play();
}
 
else if(Input.GetKeyUp(KeyCode.E) && IsOpen && CanOpen && !NeedKey)
 
{
        Closing();
        IsOpen = false;
}
 
else if(Input.GetKeyUp(KeyCode.E) && CanOpen && NeedKey)
 
{
        audio.clip = Locked;
       
        audio.Play();
}
 
if(KeyScript.GetComponent(Key).HaveKey == true)
{
        NeedKey = false;
}
 
}
 
 
 
function Opening()
{
for (var i = 0; i < 100; i++)
{
    transform.Rotate(0,0.9,0);
   
    yield WaitForSeconds(0.01);
        }
}
 
function Closing()
{
for (var i = 0; i < 100; i++)
{
    transform.Rotate(0,-0.9,0);
   
    yield WaitForSeconds(0.01);
    audio.clip = Open;
       
        audio.Play();
        }
}
 
function OnTriggerEnter (other : Collider)
{
        if(other.gameObject.tag == "Player")
        {
                CanOpen = true;
        }
}
 
function OnTriggerExit (other : Collider)
{
        if(other.gameObject.tag == "Player")
        {
                CanOpen = false;
        }
}
 
 
 
 
 
@script RequireComponent(AudioSource)

PLEASE HELP IF YOU CAN!
ALSO I FORGOT TO MENTION THAT: BackToNormal and TextureChange Are functions.

2

I fixxed t just by renaming the cross hair to CrossHair.