Helicopter script error

I'm making a Unity helicopter using this tutorial

http://www.gotow.net/andrew/wordpress/?page_id=99

and I have a good script going:

     var main_Rotor_GameObject  : GameObject;
 var tail_Rotor_GameObject  : GameObject;
 var max_Rotor_Force  : float = 22241.1081;
 var max_Rotor_Velocity  : float = 7200;
 static var         rotor_Velocity  : float = 0.0;
 private var  rotor_Rotation  : float = 0.0; 
 var  max_tail_Rotor_Force  : float = 15000.0; 
 var max_Tail_Rotor_Velocity  : float = 2200.0; 
 private var  tail_Rotor_Velocity  : float = 0.0; 
 private var  tail_Rotor_Rotation  : float = 0.0;
 var  forward_Rotor_Torque_Multiplier  : float = 0.5;
 var  sideways_Rotor_Torque_Multiplier : float = 0.5;
 static var          main_Rotor_Active : boolean = true;
 static var          tail_Rotor_Active : boolean = true;
 
 function FixedUpdate () {
 var torqueValue : Vector3;
 var controlTorque : Vector3 = Vector3( 
 Input.GetAxis( "Vertical" ) * forward_Rotor_Torque_Multiplier, 
 1.0,
 -Input.GetAxis( "Horizontal2" ) * sideways_Rotor_Torque_Multiplier
 );
 if ( main_Rotor_Active == true ) {
 torqueValue += (controlTorque * max_Rotor_Force * rotor_Velocity);
 rigidbody.AddRelativeForce( Vector3.up * max_Rotor_Force * rotor_Velocity );
 }
 if ( Vector3.Angle( Vector3.up, transform.up ) < 80 ) {
 transform.rotation = Quaternion.Slerp( transform.rotation,
 Quaternion.Euler( 0, transform.rotation.eulerAngles.y, 0 ),
 Time.deltaTime * rotor_Velocity * 2 );
 }
 if ( tail_Rotor_Active == true ) {
 torqueValue -= (Vector3.up * max_tail_Rotor_Force * tail_Rotor_Velocity);
 }
 rigidbody.AddRelativeTorque( torqueValue );
 function Update () {
 }
 if ( main_Rotor_Active == true ) {
 main_Rotor_GameObject.transform.rotation = transform.rotation * 
 Quaternion.Euler( 0, 
 rotor_Rotation,
 0
 );
 }
 if ( tail_Rotor_Active == true ) {
 tail_Rotor_GameObject.transform.rotation = transform.rotation * 
 Quaternion.Euler( tail_Rotor_Rotation,
 0,
 0
 );
 }
 rotor_Rotation += max_Rotor_Velocity * rotor_Velocity * Time.deltaTime;
 tail_Rotor_Rotation += max_Tail_Rotor_Velocity * rotor_Velocity * Time.deltaTime;
 var hover_Rotor_Velocity = (rigidbody.mass * Mathf.Abs( Physics.gravity.y )
 / max_Rotor_Force);
 var hover_Tail_Rotor_Velocity = (max_Rotor_Force * rotor_Velocity) 
 / max_tail_Rotor_Force;
 if ( Input.GetAxis( "Vertical2" ) != 0.0 ) {
 rotor_Velocity += Input.GetAxis( "Vertical2" ) * 0.001;
 }else{
 rotor_Velocity = Mathf.Lerp( rotor_Velocity, 
 hover_Rotor_Velocity, 
 Time.deltaTime * Time.deltaTime * 5
 );
 }
 tail_Rotor_Velocity = hover_Tail_Rotor_Velocity - Input.GetAxis( "Horizontal" );
 if ( rotor_Velocity > 1.0 ) {
 rotor_Velocity = 1.0;
 }else if ( rotor_Velocity < 0.0 ) {
 rotor_Velocity = 0.0;
 }
 }

And the error console says "Assets/Scripts/Helicopter_Script.js(3,24): BCE0044: unexpected char: 0xFB02." I really dont know what that means so any help would be great thanks