AssertionError when checking a ubiquity crash

[Emilien Klein]

Installing Ubuntu 11.10 beta 1 in a VMware is crashing. A popup asks to run `ubuntu-bug ubiquity` in a terminal, but when I do this, the following Exception is displayed in the terminal:

ERROR: hook /usr/share/apport/package-hooks//source_ubiquity.py crashed:
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/apport/report.py", line 663, in add_hooks_info
    symb['add_info'](self, ui)
  File "/usr/share/apport/package-hooks//source_ubiquity.py", line 78, in add_info
    report['DuplicateSignature'] = duplicate_signature
  File "/usr/lib/python2.7/dist-packages/problem_report.py", line 510, in __setitem__
    and (hasattr(v[0], 'isalnum') or hasattr(v[0], 'read'))))
AssertionError

Then a popup appears telling me that this bug was already reported and is now opened in the browser. The first 2 times I tried this, there was actually no browser tab that got opened. I just tried to make a new installation, same crash, same exception message, but now the browser opened a new tab for bug #743359.

[Launchpad Janitor (janitor)]

This bug was fixed in the package apport - 1.23-0ubuntu1

---------------
apport (1.23-0ubuntu1) oneiric; urgency=low

  [ Brian Murray ]
  * data/package-hooks/source_ubiquity.py: Do not create a DuplicateSignature
    for bugs with a Traceback included as it is redundant

  [ Martin Pitt ]
  * New upstream release:
    - crashdb.py, crash-digger, dupdb-admin: Drop the concept of "duplicate DB
      consolidation". Such massive queries cause timeouts with e. g.
      Launchpad. Instead, update the status of potential master bugs in the
      crash DB whenever check_duplicate() is called. Note that this does not
      affect Ubuntu itself, just the retracers in the data center.
    - launchpad.py: Fix crash in close_duplicate() if master bug was already
      marked as a duplicate of the examined bug.
    - problem_report.py, load(): Fix missing last character if the last line
      in a multi-line field is not terminated with a newline.
    - launchpad.py: Fix test_marking_python_task_mangle() check to work with
      current Launchpad.
    - apport-retrace: If the user did not specify a --cache directory, create
      a shared one instead of letting the two install_packages() calls create
      their own. This ensures that the apt and dpkg status is up to date, and
      avoids downloading the package indexes multiple times. (LP: #847951)
    - apport-retrace: Give proper error mesage instead of AssertionError crash
      if a report does not contain standard Apport format data. (LP: #843221)
    - fileutils.py, get_new_reports(): Fix crash if report file disappears in
      the middle of the operation. (LP: #640216)
    - apport/ui.py, load_report(): Intercept another case of broken report
      files. (LP: #445142)
    - apport/report.py, standard_title(): Escape regular expression control
      characters in custom exception names. (LP: #762998)
  * data/package-hooks/source_ubiquity.py: Fix crash if
    prepare_duplicate_signature() does not return anything. (LP: #843911)
  * debian/control: Bump Standards-Version to 3.9.2 (no changes necessary).
 -- Martin Pitt <email address hidden> Wed, 14 Sep 2011 08:29:03 +0200