Not sure what this error means?

Hi all. I am trying to create a simple raycast system, so my enemy will know if the path to a waypoint is blocked. This is the code I am using:

 var waypoint : Transform[];
 var speed : float = 50;
 private var currentWaypoint : int = 0;
 var loop : boolean = true;
 var player : Transform;
 var dist : float = 3;
 var rayDist : float = 3;
 private var character : CharacterController;
 
 
 function Start ()
 {
     character = GetComponent(CharacterController);
 }
  
 function Update () 
 {
         var target : Vector3 = waypoint[currentWaypoint].position;
         target.y = transform.position.y; // keep waypoint at character's height
         var moveDirection : Vector3 = target - transform.position;
         if(moveDirection.magnitude < 1)
         {
             transform.position = target; // force character to waypoint position
             currentWaypoint = Random.Range(0, waypoint.Length);
         }
         else
         {
 
         var rayDirection = target.transform.position - transform.position;
         var rayLength = Vector3.Distance(transform.position, target.transform.position);
         if (Physics.Raycast (transform.position, rayDirection, rayLength)==false){
             transform.LookAt(target);
             character.Move(moveDirection.normalized * speed * Time.deltaTime);
         }
         if (Physics.Raycast (transform.position, rayDirection, rayLength)==true){
             currentWaypoint = Random.Range(0, waypoint.Length);
             print("Going around");
         }
     }
 }

And this is the error I am receiving:

 MissingFieldException: UnityEngine.Vector3.transform
 Boo.Lang.Runtime.DynamicDispatching.PropertyDispatcherFactory.FindExtension (IEnumerable`1 candidates)
 Boo.Lang.Runtime.DynamicDispatching.PropertyDispatcherFactory.Create (SetOrGet gos)
 Boo.Lang.Runtime.DynamicDispatching.PropertyDispatcherFactory.CreateGetter ()
 Boo.Lang.Runtime.RuntimeServices.DoCreatePropGetDispatcher (System.Object target, System.Type type, System.String name)
 Boo.Lang.Runtime.RuntimeServices.CreatePropGetDispatcher (System.Object target, System.String name)
 Boo.Lang.Runtime.RuntimeServices+<GetProperty>c__AnonStorey16.<>m__A ()
 Boo.Lang.Runtime.DynamicDispatching.DispatcherCache.Get (Boo.Lang.Runtime.DynamicDispatching.DispatcherKey key, Boo.Lang.Runtime.DynamicDispatching.DispatcherFactory factory)
 Boo.Lang.Runtime.RuntimeServices.GetDispatcher (System.Object target, System.String cacheKeyName, System.Type[] cacheKeyTypes, Boo.Lang.Runtime.DynamicDispatching.DispatcherFactory factory)
 Boo.Lang.Runtime.RuntimeServices.GetDispatcher (System.Object target, System.Object[] args, System.String cacheKeyName, Boo.Lang.Runtime.DynamicDispatching.DispatcherFactory factory)
 Boo.Lang.Runtime.RuntimeServices.GetProperty (System.Object target, System.String name)
 UnityScript.Lang.UnityRuntimeServices.GetProperty (System.Object target, System.String name)

The issue is that I am not sure what that error means, and I have no clue how to fix it. I would be grateful for any help anyone can provide, or even a reference to figure out what the error means. Thanks all!