/usr/lib/python2.7/site-packages/guake/guake_app.py:1480: GtkWarning: gtk_box_pack: assertion 'child->parent == NULL' failed
  self.mainframe.pack_start(self.mainframe, expand=True, fill=True, padding=0)
Traceback (most recent call last):
  File "/usr/lib/python2.7/runpy.py", line 162, in _run_module_as_main
    "__main__", fname, loader, pkg_name)
  File "/usr/lib/python2.7/runpy.py", line 72, in _run_code
    exec code in run_globals
  File "/usr/lib/python2.7/site-packages/guake/main.py", line 235, in <module>
    exec_main()
  File "/usr/lib/python2.7/site-packages/guake/main.py", line 231, in exec_main
    if not main():
  File "/usr/lib/python2.7/site-packages/guake/main.py", line 147, in main
    instance = Guake()
  File "/usr/lib/python2.7/site-packages/guake/guake_app.py", line 287, in __init__
    self.hotkeys = guake.globalhotkeys.GlobalHotkey()
SystemError: NULL result without error in PyObject_Call