$ catfish 

sys:1: PyGIWarning: Gtk was imported without specifying a version first. Use gi.require_version('Gtk', '3.0') before import to ensure that the right version gets loaded.

(catfish.py:4599): Gtk-WARNING **: gtkwidget.c:8456: widget not within a GtkWindow
Traceback (most recent call last):
  File "/usr/share/catfish/bin/catfish.py", line 44, in <module>
    catfish.main()
  File "/usr/share/catfish/catfish/__init__.py", line 73, in main
    window = CatfishWindow.CatfishWindow()
  File "/usr/share/catfish/catfish_lib/Window.py", line 170, in __new__
    new_object.finish_initializing(builder)
  File "/usr/share/catfish/catfish/CatfishWindow.py", line 258, in finish_initializing
    menuitem.hide()
AttributeError: 'NoneType' object has no attribute 'hide'