[Bug 1165172] Re: upgrade 12.10 -> 13.04 fails with Error in function

[Jean-Baptiste Lallement]

Error from the logs:
= = = = =
Processing triggers for gconf2 ...
Traceback (most recent call last):
  File "/usr/bin/update-gconf-defaults", line 9, in <module>
    import os,tempfile,shutil,sys
  File "/usr/lib/python2.7/tempfile.py", line 32, in <module>
    import io as _io
ImportError: No module named io
Error in sys.excepthook:
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/apport_python_hook.py", line 64, in apport_excepthook
    from apport.fileutils import likely_packaged, get_recent_crashes
  File "/usr/lib/python2.7/dist-packages/apport/__init__.py", line 4, in <module>
    from apport.report import Report
  File "/usr/lib/python2.7/dist-packages/apport/report.py", line 12, in <module>
    import subprocess, tempfile, os.path, re, pwd, grp, os
  File "/usr/lib/python2.7/tempfile.py", line 32, in <module>
    import io as _io
ImportError: No module named io

Original exception was:
Traceback (most recent call last):
  File "/usr/bin/update-gconf-defaults", line 9, in <module>
    import os,tempfile,shutil,sys
  File "/usr/lib/python2.7/tempfile.py", line 32, in <module>
    import io as _io
ImportError: No module named io
dpkg: error processing gconf2 (--unpack):
 subprocess installed post-installation script returned error exit status 1
= = = = =


** Changed in: ubuntu-release-upgrader (Ubuntu)
   Importance: Undecided => Critical

** Changed in: ubuntu-release-upgrader (Ubuntu)
       Status: Incomplete => Confirmed

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https://bugs.launchpad.net/bugs/1165172

Title:
  upgrade 12.10 -> 13.04 fails with Error in function

Status in “ubuntu-release-upgrader” package in Ubuntu:
  Confirmed

Bug description:
  On upgrading from quantal to rairing the terminal stops with "Error in
  function:"

  Last output:
  Running hooks in /etc/ca-certificate/update.d....
  Adding debian:Actalis_Authentication_Root_CA.pem
  Adding debian:Bypass_Class_2_Root_CA.pem 
  Adding debian:Bypass_Class_3_Root_CA.pem 
  Adding debian:EE_Certification_Centre_Root_CA:pem
  Adding debian:StartCom_Certification_Authority_G2.pem
  Adding debian:Trustis_FPS_Root_CA.pem
  Adding debian:T-TeleSec_GlobalRoot_Class_3.pem
  done.
  done.
  Processing triggers for ureadahead ...
  Processing triggers for dictionaries-common ...
  Processing triggers for libreoffice_common ...
  Error in function:

  A popup show:
  The problem cannot be reported:

  The problem happened with the program /usr/lib/i386-linux-gnu/gdk-
  pixbuf-2.0/gdk-pixbuf-query-loaders which changed since the crash
  occurred.

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