Comment 5 for bug 1024972

Sorry the actual traceback from Precise is

/usr/lib/python2.7/dist-packages/gi/overrides/Gtk.py:391: Warning: g_object_set_property: construct property "type" for object `Window' can't be set after construction
  Gtk.Window.__init__(self, type=type, **kwds)
/usr/lib/python2.7/dist-packages/gi/overrides/Gtk.py:391: Warning: g_object_set_property: construct property "type" for object `FoggerWindow' can't be set after construction
  Gtk.Window.__init__(self, type=type, **kwds)
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/fogger/FoggerWindow.py", line 156, in create_app
    app = Gio.DesktopAppInfo.new_from_filename(app.desktop_file)
  File "/usr/lib/python2.7/dist-packages/gi/types.py", line 72, in constructor
    return info.invoke(cls, *args, **kwargs)
TypeError: constructor returned NULL