[Discuss-gnuradio] impossible to execute flow graph

[pascal m]

Hello,
I installed gnuradio 3.6.2 on Ubunto 12.04LTS.
I always get errors when I execute the flow graph.
Example if I take ~ / gnuradio / gr-audio / examples / grc / dial_tone.grc
Sev despite hours of research I have not been able to find out why it does not work.
I find the problemme throughout the examples given.
Thank you for your help
Pascal 

Following error messages:

Generating: "/home/pascal/gnuradio/gr-audio/examples/grc/dial_tone.py"
Executing: "/home/pascal/gnuradio/gr-audio/examples/grc/dial_tone.py"
Traceback (most recent call last):
  File "/home/pascal/gnuradio/gr-audio/examples/grc/dial_tone.py", line 127, in <module>
    tb = dial_tone()
  File "/home/pascal/gnuradio/gr-audio/examples/grc/dial_tone.py", line 45, in __init__
    proportion=0,
  File "/usr/local/lib/python2.7/dist-packages/gnuradio/wxgui/forms/forms.py", line 234, in __init__
    self._add_widget(self._text_box, label)
  File "/usr/local/lib/python2.7/dist-packages/gnuradio/wxgui/forms/forms.py", line 113, in _add_widget
    update(self[INT_KEY])
  File "/usr/local/lib/python2.7/dist-packages/gnuradio/wxgui/forms/forms.py", line 101, in <lambda>
    update = lambda x: wx.PostEvent(widget, DataEvent(x))
  File "/usr/local/lib/python2.7/dist-packages/gnuradio/wxgui/forms/forms.py", line 53, in __init__
    wx.PyEvent.__init__(self, wx.NewId(), EVT_DATA.typeId)
AttributeError: 'PyEventBinder' object has no attribute 'typeId'