sugar-drawing assert

[Tobias Steinicke]

ERROR:sugar-drawing.c:358:sugar_draw_rounded_arrow: code should not be
reached

Hi at all,
I play a little bit with sugar on ubuntu intrepid with there own
packages. Now i have a program written in python and gtk.
When i run this program i get this message

"ERROR:sugar-drawing.c:358:sugar_draw_rounded_arrow: code should not be
reached"

When i run this program as root i have no problems. I think because it
use a different theme. What i make wrong?

Thanks
Tobias Steinicke