AttributeError: ' ' object has no attribute ' '

Newsgroups	comp.lang.python
Date	2013-02-23 10:22 -0800
Message-ID	<f1beb34a-c566-4ae5-8946-3e66a08896f9@googlegroups.com> (permalink)
Subject	AttributeError: ' ' object has no attribute ' '
From	matt.doolittle33@gmail.com

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I am using Ubuntu 12.10, and Python 2.7.3, GNU Radio Companion v3.6.3.  I get the this error in terminal: 

 in __init__
    self.wxgui_waterfallsink2_0.set_callback(wxgui_waterfallsink2_0_callback)
  File "/usr/local/lib/python2.7/dist-packages/gnuradio/gr/hier_block2.py", line 54, in __getattr__
    return getattr(self._hb, name)
AttributeError: 'gr_hier_block2_sptr' object has no attribute 'set_callback'

I have been getting this error in multiple programs.  So what is stopping the program here?  There is no Attribute .set_callback obviously. But where is this attribute missing from exactly and how do i put it where it should be?

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AttributeError:  '  ' object has no attribute '  ' matt.doolittle33@gmail.com - 2013-02-23 10:22 -0800
  Re: AttributeError: ' ' object has no attribute ' ' Chris Angelico <rosuav@gmail.com> - 2013-02-24 09:03 +1100
    Re: AttributeError: ' ' object has no attribute ' ' matt.doolittle33@gmail.com - 2013-02-23 19:34 -0800
    Re: AttributeError: ' ' object has no attribute ' ' matt.doolittle33@gmail.com - 2013-02-23 19:34 -0800
  RE: AttributeError:  '  ' object has no attribute '  ' Graham Fielding <frednotbob@hotmail.ca> - 2013-02-23 16:43 -0800

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