Random Compiler Errors

Questions & Answers
1

My game was working fine. Then one time I open it after making no changes. The game here are the errors:
Assets/Enemy.js(11,11): BCE0044: expecting (, found ‘Start’.
Assets/Enemy.js(11,18): UCE0001: ‘;’ expected. Insert a semicolon at the end.
Assets/Enemy.js(16,11): BCE0044: expecting (, found ‘Update’.
Assets/Enemy.js(16,20): UCE0001: ‘;’ expected. Insert a semicolon at the end.
Assets/Enemy.js(24,11): BCE0044: expecting (, found ‘OnTriggerEnter’.
Assets/Enemy.js(24,26): BCE0043: Unexpected token: Trigger.
Assets/Enemy.js(24,45): UCE0001: ‘;’ expected. Insert a semicolon at the end.
Assets/Enemy.js(29,1): BCE0044: expecting }, found ‘’.

Here is the code:

 #pragma strict
    var target : Transform; 
     var moveSpeed = 3; 
     var rotationSpeed = 3; 
      
     var myTransform : Transform;
      
     function Awake() {
         myTransform = transform;
      
     function Start() {
          target = GameObject.FindWithTag("Player").transform;
      
     };
      
     function Update () {
         myTransform.rotation = Quaternion.Slerp(myTransform.rotation,
         Quaternion.LookRotation(target.position - myTransform.position), rotationSpeed*Time.deltaTime);
         myTransform.position += myTransform.forward * moveSpeed * Time.deltaTime;
    	 transform.position.y = 1;
      
      
     };
     function OnTriggerEnter(Trigger : Collider) {
    	 if(Trigger.tag == "Player") {
    		 Application.LoadLevel(2);
    	 };
    };
2

#pragma strict
var target : Transform;
var moveSpeed = 3;
var rotationSpeed = 3;
var myTransform : Transform;

  function Awake() 
  {
      myTransform = transform;
  }
  function Start() 
  {
       target = GameObject.FindWithTag("Player").transform;
  }
  function Update () 
  {
      myTransform.rotation = Quaternion.Slerp(myTransform.rotation, Quaternion.LookRotation(target.position - myTransform.position), rotationSpeed*Time.deltaTime);
      myTransform.position += myTransform.forward * moveSpeed * Time.deltaTime;
      transform.position.y = 1;
  }
  function OnTriggerEnter(trigger : Collider) 
  {
      if(trigger.tag == "Player") Application.LoadLevel(2);
  }