Vector3.lerp doest work

Hello, I have this script that's supposed to move the camera more smoothly by moving the player. But it doesn't work and it gives me this message on line -1.

 MissingFieldException: Field 'UnityEngine.Vector3.transform' not found.
 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__AnonStorey14.<>m__9 ()
 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)

This is the script:

 var player : GameObject;
 var offset : Vector3;
 
 function Start () {
     offset = player.transform.position - transform.position;
 }
 
 function FixedUpdate () {
     transform.position = Vector3.Lerp(transform.position, offset.transform.position, Time.time);
 }