It throws no errors up for me but still when i start the game the battery 2d gui dissapears and when a walk into the battery nothing happens here is my player collisions script and my battery collect script.

private var doorIsOpen : boolean = false; 
private var doorTimer : float = 0.0; 
private var currentDoor : GameObject; 

var batteryCollect : AudioClip;
var doorOpenTime : float = 3.0; 
var doorOpenSound : AudioClip; 
var doorShutSound : AudioClip; 

function Update () { 
   if(doorIsOpen){ 
      doorTimer += Time.deltaTime; 
   if(doorTimer > 3){ 
      shutDoor();  
      doorTimer = 0.0;    
   }    
var hit : RaycastHit;  
   if(Physics.Raycast (transform.position,      
      transform.forward, hit, 5)) {    
   if(hit.collider.gameObject.tag=="outpostDoor" && doorIsOpen == 
   false){    
      currentDoor = hit.collider.gameObject;        
      Door(doorOpenSound, true, "dooropen", currentDoor);      
         GameObject.Find("Battery GUI").GetComponent(GUITexture).enabled=false;    
}    
}  
} 
} 
function OnControllerColliderHit(hit: ControllerColliderHit){  
if(hit.gameObject.tag == "outpostDoor" && doorIsOpen == false){    
currentDoor = hit.gameObject;    
Door(doorOpenSound, true, "dooropen", currentDoor); 
} 
} 

function OpenDoor(){ 
audio.PlayOneShot(doorOpenSound);  
doorOpen = true;    
      var myOutpost : GameObject = GameObject.Find("outpost");  
         myOutpost.animation.Play("dooropen");}function shutDoor(){    
         audio.PlayOneShot(doorShutSound);    doorIsOpen = false;  
      var myOutpost : GameObject = GameObject.Find("outpost");    
         myOutpost.animation.Play("doorshut"); 
} 

function Door(aClip : AudioClip, openCheck : boolean, 
animName :String, thisDoor : GameObject){ 
audio.PlayOneShot(aClip); 
doorIsOpen = openCheck; 
thisDoor.transform.parent.animation.Play(animName); 
} 
function OnTriggerEnter(collisionInfo : Collider){ 
if(collisionInfo.gameObject.tag == "battery"){ 
BatteryCollect.charge++;  
audio.PlayOneShot(batteryCollect);   
Destroy(collisionInfo.gameObject);   
}

}

@script RequireComponent(AudioSource)

and here is my battery script

static var charge : int = 0;

var charge1tex : Texture2D;
var charge2tex : Texture2D;
var charge3tex : Texture2D;
var charge4tex : Texture2D;
var charge0tex : Texture2D;

function Start(){   
    guiTexture.enabled = false; 
    charge = 0;
}

function Update () {
    if(charge == 1){
        guiTexture.texture = charge1tex;
        guiTexture.enabled = true;
    }
    else if(charge == 2){
        guiTexture.texture = charge2tex;
    }
    else if(charge == 3){
        guiTexture.texture = charge3tex;
    }
    else if(charge == 4){
        guiTexture.texture = charge4tex;
    }
    else{
        guiTexture.texture = charge0tex;
        }
}