Unity 4.2 Transform LocalPosition Not Working

Before the unity 4.2 update my code worked perfectly, now everything works except for moving the gun to the aim position. The field of view changes perfectly but not the transform.localPosition. Here's the code,

 var HitPose : Vector3;
 var AimPose : Vector3;
 
 var SprintRotation : Quaternion;
 var SprintPos : Vector3;
 private var DefaultRotation : Quaternion;
 
 private var MainCam : GameObject;
 private var GunCam : GameObject;
 
 static var CanAim : boolean = true;
 static var IsAiming : boolean = false;
 static var IsSprinting : boolean = false;
 static var CanSprint : boolean = true;
 
 var AimingZoom = 60;
 var AimSpeed = 0.5;
 
 
 function Start () {
      transform.localPosition = HitPose;
      MainCam = GameObject.FindGameObjectWithTag("MainCamera");
      GunCam = GameObject.FindGameObjectWithTag("WeaponCamera");
      DefaultRotation = transform.localRotation;
 }
 
 function Update () {
    if(Gun.IsReloading){
       StopAiming();
    }
    
    if((CanAim)&& !IsSprinting){
      if(Input.GetButton("Aim")){
         if(!Gun.IsReloading){
         Aim();
         }
      }      
    }
      if(!Input.GetButton("Aim")){
         StopAiming();
    }
    if(Input.GetButton("Sprint")){
    if((CanSprint)&& !IsAiming){
       Sprint();
       }
    }else{
         StopSprinting();
    }
 }
 
 function Aim(){
         IsAiming = true;
         transform.localPosition = Vector3.Lerp(transform.localPosition,AimPose,AimSpeed*Time.deltaTime);
         MainCam.camera.fieldOfView = AimingZoom;
         GunCam.camera.fieldOfView = AimingZoom;
 }
 
 function StopAiming(){
         IsAiming = false;
         transform.localPosition = Vector3.Lerp(transform.localPosition,HitPose,AimSpeed*Time.deltaTime);
         MainCam.camera.fieldOfView = 60;
         GunCam.camera.fieldOfView = 60;
 }
 
 function Sprint(){
      CanAim = false;
      IsSprinting = true;
      Crosshair.IsTriggered = false;
      //Gun.CanReload = false;
      //Gun.CanFire = false;
      transform.localRotation = Quaternion.Lerp(transform.localRotation,SprintRotation,5*Time.deltaTime);
      transform.localPosition = SprintPos;
 }
 
 function StopSprinting(){
      transform.localRotation = Quaternion.Lerp(transform.localRotation,DefaultRotation,5*Time.deltaTime);
      CanAim = true;
      Crosshair.IsTriggered = true;
      IsSprinting = false;
      //Gun.CanReload = true;
      //Gun.CanFire = true;
 }