ElementNotFoundError in GnoMenu: playbin

[Torbjörn Stabo]

This is what I got when trying to start from awn 0.4.0, lucid:
Traceback (most recent call last):
  File "/usr/lib/pymodules/python2.6/awn/extras/awnlib.py", line 1462, in init_start
    applet_class(applet)
  File "/usr/share/avant-window-navigator/applets/GnoMenu/GnoMenu.py", line 55, in __init__
    self.hwg = Main_Menu(self.HideMenu)
  File "/usr/lib/gnomenu/Menu_Main.py", line 88, in __init__
    self.setup()
  File "/usr/lib/gnomenu/Menu_Main.py", line 408, in setup
    self.StartEngine()
  File "/usr/lib/gnomenu/Menu_Main.py", line 693, in StartEngine
    self.player = gst.element_factory_make("playbin", "player")
ElementNotFoundError: playbin

Another way to get the error, by following GnoMenu bug reporting guidelines, clicking on the "menu button" in the window that appears:
$ GnoMenu.py run-in-window
gconf backend
GnoMenu 2.9
settings load
gmenu found, using it as default menu parser
map
start
shaping window
Traceback (most recent call last):
  File "/usr/lib/gnomenu/GnoMenu.py", line 246, in map_event
    self.hwg = Main_Menu(self.HideMenu)
  File "/usr/lib/gnomenu/Menu_Main.py", line 88, in __init__
    self.setup()
  File "/usr/lib/gnomenu/Menu_Main.py", line 408, in setup
    self.StartEngine()
  File "/usr/lib/gnomenu/Menu_Main.py", line 693, in StartEngine
    self.player = gst.element_factory_make("playbin", "player")
gst.ElementNotFoundError: playbin
Traceback (most recent call last):
  File "/usr/lib/gnomenu/GnoMenu.py", line 308, in button_press
    if not self.hwg.window.window:
AttributeError: 'NoneType' object has no attribute 'window'

(GnoMenu.py:3471): Bonobo-WARNING **: Never got frame, control died - abnormal exit condition

[Torbjörn Stabo (torbjorn-stabo)]

Solved. Found some connection between gstreamer and playbin when googling for it. I guess someone more experienced might have known that.. Reinstalled all gstreamer packages and now I get past that error.