I have been working on an fps for 15 hours now and have ran into this error please can you help Assets/Scrips/Gun script.js(7,1): BCE0044: unexpected char: 0xFEFF.

 public var bulletPrefab : Transform;
 public var bulletSpeed : float = 6000;
 var ammo : int = 30;
 var gunShot : AudioClip;Shot;
 var reload : AudioClip;Reload;
 var emptyClip : boolean = false;
 }
 function Update )) {
         if(Input.GetButtonDown("Fire1")) {
              if(ammo > 0) {
         Shoot();
               }
               else{
                       return;
               }
         }
         if(Input.GetKeyDown(KeyCode.R)) {
              if(emptyClip) {
              Reload();
              }
         }
         if(ammo >= 0) {
              emptyClip = true;
         }
         else {
                emptyClip = false;
         }
 }
 
 function Shoot(){
         var bullet = Instantiate(bulletPrefab, transform.Find("BulletSpawn").position, transform.Find("BulletSpawn").rotation);
         bullet.rigidbody.AddForce(transform.forward * bulletSpeed);
         audio.PlayOneShot(Shot);
         ammo--;
 }
 
 function Reload() {
         audio.PlayOneShot(Reload);
         ammo = 30;
 }
 
 function OnGUI() {
         GUI.Label(Rect ( 0,0, 75, 25), "Ammo " + ammo);
 }