Problems with "this" and "_parent"

I have a simple class that I created. It was working fine then stopped for no reason that I can tell.

I have it trace the value for “this”, then I have it trace the value for “_parent”, here is what I get:

this = _level0.instance1.instance2.nav001
_parent = undefined

Shouldn’t _parent = _level0.instance1.instance2?

This is the root of my probelms since I use this class to change the _x and _y values of the _parent._parent.

Has anyone seen something like this before? It is very frustrating.

Thanks for any help.