BCE0017: Script Help

I have checked the WHOLE Script! I cannot seem to find any problems! Can anybody help me please? I'm getting: BCE0017: The best overload for the method 'UnityEngine.Vector3.Distance(UnityEngine.Vector3, UnityEngine.Vector3)' is not compatible with the argument list '(UnityEngine.Vector3, UnityEngine.Transform)'.

My Script:

 #pragma strict
 
 private var waypoints : GameObject[];
 var maxSize : int = 12;
 private var currentIndex : int;
 private var currentWaypoint : Transform;
 var ourCamera : Transform;
 var done : boolean = false;
 var thingToLookAt : Transform;
 
  function Start () {
     currentIndex = 0;
     waypoints = new GameObject[maxSize];
 
     for (var child : Transform in transform)
     {
         if (currentIndex < maxSize)
         {
             waypoints[currentIndex] = child.gameObject;
             ++currentIndex;
         }
     }
     
     currentWaypoint = GetNextWaypoint();
 }
 
 function Update () {
     if (done == false)
     {
         if (currentWaypoint != null)
         {
             if (Vector3.Distance(ourCamera.position, currentWaypoint) < .5)
             {
                 currentWaypoint = GetNextWaypoint();
             }
             else
             {
                 ourCamera.position = Vector3.Lerp(ourCamera.position, currentWaypoint.position, Time.deltaTime * 2);
                 ourCamera.transform.LookAt(thingToLookAt);
             }
         }
         else
             done = true;
     }
 }
 
 function GetNextWaypoint()
 {
     if (currentIndex > 0)
     {
         var nextWaypoint : Transform = waypoints[currentIndex - 1].transform;
         --currentIndex;
         return nextWaypoint;
     }
     else
         return null;
 }