[Discuss-gnuradio] issue with GRC on ubuntu 12.10 - Segmentation Fault when launching the tool

[Arturo Rinaldi]

After successfully building gnuradio 3.6.2 on ubuntu quantal quetzal 12.10 i get this error when launching gnuradio-companion :

address@hidden:/usr/local/bin$ gnuradio-companion
Traceback (most recent call last):
  File "/usr/local/bin/gnuradio-companion", line 58, in <module>
    from gnuradio.grc.python.Platform import Platform
  File "/usr/local/lib/python2.7/dist-packages/gnuradio/grc/python/Platform.py", line 22, in <module>
    from .. base.Platform import Platform as _Platform
  File "/usr/local/lib/python2.7/dist-packages/gnuradio/grc/base/Platform.py", line 22, in <module>
    from .. base import ParseXML, odict
  File "/usr/local/lib/python2.7/dist-packages/gnuradio/grc/base/ParseXML.py", line 20, in <module>
    from lxml import etree
  File "lxml.etree.pyx", line 67, in init lxml.etree (src/lxml/lxml.etree.c:160085)
  File "/usr/lib/python2.7/io.py", line 51, in <module>
    import _io
TypeError: type '_io._IOBase' participates in gc and is a base type but has inappropriate tp_free slot
Segmentation Fault (core dump created)

I satisfied all the required dependencies with the build-gnuradio script by SBRAC. Any ideas to solve this issue, it never happened to me in any build of GNURadio from stable tarball. Do I have to install some other python package ?

Thank you in advance

Kind Regards

              Arturo