#59 Error during path generation

[Anonymous]

An unexpected exception occoured: please send the text below to the developers of PyCAM. Thanks a lot!
Traceback (most recent call last):
File "/usr/lib/pymodules/python2.6/pycam/Gui/Project.py", line 4041, in generate_toolpath
self.model, toolpath_settings, callback=draw_callback)
File "/usr/lib/pymodules/python2.6/pycam/Toolpath/Generator.py", line 62, in generate_toolpath_from_settings
backend, callback)
File "/usr/lib/pymodules/python2.6/pycam/Toolpath/Generator.py", line 226, in generate_toolpath
callback=callback)
File "/usr/lib/pymodules/python2.6/pycam/Geometry/Model.py", line 683, in get_offset_model
new_groups = group.get_offset_polygons(offset, callback=callback)
File "/usr/lib/pymodules/python2.6/pycam/Geometry/Polygon.py", line 965, in get_offset_polygons
cleaned_line_groups = simplify_polygon_intersections(new_lines)
File "/usr/lib/pymodules/python2.6/pycam/Geometry/Polygon.py", line 911, in simplify_polygon_intersections
if groups[0][0].p1 == new_group[-1].p2:
IndexError: list index out of range

[Nobody/Anonymous]

The DFX file for generating the paths.