TypeError: Error #2007: and ReferenceError: Error #1069:

I've got a problem with some drag and drop work I am doing.

These are the error messages:

Code:

---

TypeError: Error #2007: Parameter hitTestObject must be non-null.
        at flash.display::DisplayObject/_hitTest()
        at flash.display::DisplayObject/hitTestObject()
        at DragDrop/drop()
ReferenceError: Error #1069: Property match not found on Map and there is no default value.
        at DragDrop/drop()

---

It was working fine. Then I added a new set of dragable objects and some new targets.

I want frame 1 to contain the squares to be matched up. Then I want frame 2 to contain the circle to be matched up.

Here are the files:
https://dl.dropbox.com/u/309502/flas...raganddrop.fla
https://dl.dropbox.com/u/309502/flas...or-1069/Map.as
https://dl.dropbox.com/u/309502/flas...69/DragDrop.as

Any ideas?

Many thanks (again).