Problem with getcomponent replacing static variables

Hi everybody

I've been working on replacing the static variables in the script I use for my enemies, because I want to add more then 1 enemy. So I've replaced the static variable used for the enemies health by a normal variable I reach using FindWithTag(All my enemies have the tag Enemy) and GetComponent. But there's a problem in my script. The enemy immediately dies when the player is instantiated

These are my scripts:

The script attached to the enemy prefab, EnemyProximity:

     static var aggroDistance = 10;
     var mytransform : Transform;
     var otherobject : GameObject;
     var othertransform : Transform;
     var glitchCorrector : boolean = true;
     var tickerInterval : boolean = false;
     var tickerRate = 5.0;
     private var nextTick = 0.0;
     var drop : GameObject;
     var enemyHealth : int;
     static var seppuku : boolean = false;
     var attackscript : AttackScript;
     
     function Awake (){
     otherobject = null;
     othertransform = null;
     enemyHealth = 100;
     }
     
     function Update () {
     
     if (ClassSelectionScript.classselected == true && otherobject == null && othertransform == null ){
     otherobject = GameObject.FindWithTag("Player");
     othertransform = otherobject.GetComponent(Transform);
     attackscript = otherobject.GetComponent(AttackScript);
     }
     
 if (attackscript != null && otherobject != null && attackscript.enemyHealth <=     enemyHealth){
   enemyHealth = attackscript.enemyHealth;
    }
     
     if (othertransform != null && Vector3.Distance(mytransform.position, othertransform.position) < aggroDistance && glitchCorrector == true){
     ArcherHealthScript.curhealth += 10;
     WarriorHealthScript.curhealth += 10;
     MageHealthScript.curhealth += 10;
     glitchCorrector = false;
     }
     
     if (othertransform != null && Vector3.Distance(mytransform.position, othertransform.position) > aggroDistance && glitchCorrector == false){
     glitchCorrector = true;
     }
     
     if(othertransform != null && Vector3.Distance(mytransform.position, othertransform.position) < aggroDistance && tickerInterval == false && HealthScript.curhealth > 0){
     ArcherHealthScript.curhealth -= 10;
     MageHealthScript.curhealth -= 10;
     WarriorHealthScript.curhealth -= 10;
     tickerInterval = true;
     }
     
     if(tickerInterval == true && Time.time > nextTick){
     nextTick = Time.time + tickerRate;
     tickerInterval = false;
     }
     
     if(enemyHealth <= 0){
     seppuku = true;
     Destroy(gameObject);
     var instance : GameObject = Instantiate(drop, transform.position+Vector3(0,0.2,0), transform.rotation);
     ExperienceScript.curexp += 10;
     }
     }

And the script attached to the player, called AttackScript:

 static var distance = 10;
 var myobject : GameObject;
 var otherobject : GameObject;
 var mytransform : Transform;
 var othertransform : Transform;
 var cooldown : boolean = false;
 var activetexture : GUIStyle;
 var inactivetexture : GUIStyle;
 var usedtexture : GUIStyle;
 var enemyproximity : EnemyProximity;
 var enemyHealth : int;
 static var interval : float;
 
 
 function Start (){
 
 usedtexture = activetexture; 
 myobject = GameObject.FindWithTag("Player");
 otherobject = GameObject.FindWithTag("Enemy");
 mytransform = myobject.GetComponent(Transform);
 othertransform = otherobject.GetComponent(Transform);
 enemyproximity = otherobject.GetComponent(EnemyProximity);
 enemyHealth = enemyproximity.enemyHealth;
 interval = 10;
 
 }
 
 function OnGUI (){
 
 if (GUI.Button (Rect(0,500,100,100),GUIContent("Attack"),usedtexture) && Vector3.Distance(mytransform.position, othertransform.position) < distance && enemyHealth > 0 && cooldown == false){
 enemyHealth -= 50;
 cooldown = true;
 Timer();
 }
 }
 
 function Update (){
 if (enemyproximity.enemyHealth > enemyHealth){
 enemyHealth = enemyproximity.enemyHealth;
 }
 }
 
 function Timer (){
 
 if(cooldown == true){
 usedtexture = inactivetexture;
 yield WaitForSeconds(interval);
 cooldown = false;
 usedtexture = activetexture;
 }
 }

The problem is caused by .GetComponent I think. And I also get a error in line 27 of the EnemyProximity script, saying object reference not set to an instance of an object.

Please help me solve these problems!