How to make geometrical reference?

Hi all

To make things stright from the start - I'm a software developer not a designer. I develop an addin for SW and have got a really complex assembly from a customer who says that it has circular referenses!? - somthing called geometric reference. This assembly breaks my internal generation for the reference tree (infinitive loop).

Now I need to make an, as simple as possible, assembly with a circular reference for debug purposes.

That is a file structure like this:

Ass1

   Part1

      Ass1

Is this possible and how do I do it? I use SW2007 SP5.

If not possible - what is the most simple structure I could build and how?

Thanks in advance

Kalle Pettersson

SolidworksAssemblies