Joel,
No problem, test file attached.
Steps:
I converted the original powerpoint file online to an ODF drawing
At this point I manipulated each polygon line to represent puzzle piece lines (see attached file) using the various "Edit Points" toolbar
Software crashes occurred when I would zoom into a polygon area and then start editing it by either stretching a point, adding a point, or manipulating the curve.
In order to finish the graphic I've had to manually save after making a single change. Let me know if there's a fix for this.
Thanks,
Brian