Help. SocketProjectile freezes game.

I recently viewed the astroid walkerboys tutorial. When I got to http://vimeo.com/19462497I get this message after it happens.

var playerSpeedVertical :float = 10.0;
var playerSpeedHorizontal :float = 10.0;
var horMin :float = -6.0;
var horMax :float = 6.0;
var verMin :float = -4.0;
var verMax :float = 4.0;
var projectile 		 :Transform;
var socketProjectile :Transform;


function Update () 
{

   var transV :float = Input.GetAxis("Vertical") * playerSpeedVertical * Time.deltaTime;
   var transH :float = Input.GetAxis("Horizontal") * playerSpeedHorizontal * Time.deltaTime;
   
   transform.Translate(transH,transV, 0);
   
   transform.position.x = Mathf.Clamp(transform.position.x, horMin, horMax);
   transform.position.y = Mathf.Clamp(transform.position.y, verMin, verMax);

   if(Input.GetKeyDown("space"))
   {
   	   
   	   Instantiate (projectile, socketProjectile.position, socketProjectile.rotation);
   }


}

Bump! Could I get some advice here?