Enemies/GameObject disappearing after initial animation

Hi Guys,

Probably just a silly one this, but I've added an Alien enemy with appropriate animations which I can attack and kill via RayCastHit. All this works fine.

My problem is, after the initial Idle_Walkaround animation has run, the Alien/GameObject just disappears/Destroys from Hierarchy.

I've written a couple of simple scripts to facilitate the damage and player attack using raycasthit. Is there somthing I'm doing wrong that's causing the gameObjects to Destroy?

Here's the code.

--- enemyScript ----

var health = 100; var deathClip : AnimationClip;

function Update(){

 if(health <= 0){
     GameObject.Find("enemy").GetComponent.<Animation>().Play("die1");
 }

}

function applyDamage(){ health -= 10; print("Enemy Health: " + health + "%"); }

--------END enemyScript---------

-------playerScript----------

function Update(){

 var forwardPosition = transform.TransformDirection(Vector3(0,0,10));
 var playerRayHit : RaycastHit;
 if(Physics.Raycast(transform.position, forwardPosition, playerRayHit)){
 
     //print("ray is active");
     //print("object name: " + playerRayHit.transform.name);
     if(Input.GetMouseButtonDown(0) && playerRayHit.transform.name == "enemy"){
         playerRayHit.transform.SendMessage("applyDamage");

         }
 }

}

------END playerScript---------

I'm a novice scripter, so please excuse any obvious errors, Thanks.