Missile not launching(anymore)

im folowing the fps tutorial and ive just added the GUI (but even when i remove this there is still the same problem) that my Missile object isn't being fired is it a problem with my scrips? Here they are:

missileLauncher

var projectile : Rigidbody; var speed = 20; function Update() { if( Input.GetButtonDown( "Fire1" ) ) { var instantiatedProjectile : Rigidbody = Instantiate( projectile, transform.position, transform.rotation ); instantiatedProjectile.velocity = transform.TransformDirection( Vector3( 0, 0, speed ) ); Physics.IgnoreCollision( instantiatedProjectile. collider, transform.root.collider ); } }

projectile

var explosion : GameObject;

function OnCollisionEnter( collision : Collision ) { var contact : ContactPoint = collision.contacts[0]; var rotation = Quaternion.FromToRotation( Vector3.up, contact.normal ); var instantiatedExplosion : GameObject = Instantiate( explosion, contact.point, rotation ); Destroy( gameObject ); }

and finily Explosion

var explosionTime = 1.0; function Start() { Destroy( gameObject, explosionTime ); }

PLZ help me and if it isn't the code what else could it be?