Warning : contributors.list file not found.
Warning : foundation-members.list file not found.
Traceback (most recent call last):
  File "./about-test.py", line 855, in <module>
    GnomeAbout ().show_all ()
  File "./about-test.py", line 711, in __init__
    self.set_properties ("allow-grow", False, "allow-shrink", False)
AttributeError: 'GnomeAbout' object has no attribute 'set_properties'