GRAMPS : 2.0.11-2
LANG : en_US
LANGUAGE : en_US:en
Python : 2.4.1 final
GTK : 2.8.3
PyGTK : 2.6.2
OS : Mandriva Linux release 2006.0 (Official) for i586

Traceback (most recent call last):
  File "/usr/share/gramps/Report.py", line 1891, in report
    MyReport.write_report()
  File "/usr/share/gramps/plugins/DetDescendantReport.py", line 207, in write_report
    dupPerson = self.write_person(key)
  File "/usr/share/gramps/plugins/DetDescendantReport.py", line 290, in write_person
    self.write_mate(person)
  File "/usr/share/gramps/plugins/DetDescendantReport.py", line 496, in write_mate
    self.write_parents(ind, firstName)
  File "/usr/share/gramps/plugins/DetDescendantReport.py", line 364, in write_parents
    mother_handle = family.get_mother_handle()
AttributeError: 'NoneType' object has no attribute 'get_mother_handle'