[Bug 1243033] Re: Cannot upgrade from 13.04 to 13.10 (localized string:"Impossibile installare gli avanzamenti di versione")

[Brian Murray]

>From apt-term.log:

Unpacking libao4:amd64 (from .../libao4_1.1.0-2ubuntu1_amd64.deb) ...^M
Preparing to replace python-appindicator 12.10.1daily13.04.15-0ubuntu1 (using .../python-appindicator_12.10.1+13.10.20130920-0ubuntu2_amd64.deb) ...^M
dpkg-query: error: libao4:amd64 1.1.0-1ubuntu1 (Multi-Arch: no) is not co-installable with libao4 which has multiple installed instances^M
Traceback (most recent call last):^M
  File "/usr/bin/pyclean", line 117, in <module>^M
    main()^M
  File "/usr/bin/pyclean", line 101, in main^M
    pfiles = set(dpf.filter_out_ext(pfiles, ('.so',)))^M
  File "/usr/share/python/debpython/files.py", line 77, in filter_out_ext^M
    for fn in files:^M
  File "/usr/share/python/debpython/namespace.py", line 77, in add_namespace_files^M
    for fn in files:^M
  File "/usr/share/python/debpython/files.py", line 53, in from_package^M
    raise Exception("cannot get content of %s" % package_name)^M
Exception: cannot get content of python-appindicator^M
dpkg: warning: subprocess old pre-removal script returned error exit status 1^M
dpkg: trying script from the new package instead ...^M
dpkg-query: error: libao4:amd64 1.1.0-1ubuntu1 (Multi-Arch: no) is not co-installable with libao4 which has multiple installed instances^M
Traceback (most recent call last):^M
  File "/usr/bin/pyclean", line 117, in <module>^M
    main()^M
  File "/usr/bin/pyclean", line 101, in main^M
    pfiles = set(dpf.filter_out_ext(pfiles, ('.so',)))^M
  File "/usr/share/python/debpython/files.py", line 77, in filter_out_ext^M
    for fn in files:^M
  File "/usr/share/python/debpython/namespace.py", line 77, in add_namespace_files^M
    for fn in files:^M
  File "/usr/share/python/debpython/files.py", line 53, in from_package^M
    raise Exception("cannot get content of %s" % package_name)^M
Exception: cannot get content of python-appindicator^M
dpkg: error processing /var/cache/apt/archives/python-appindicator_12.10.1+13.10.20130920-0ubuntu2_amd64.deb (--unpack):^M
 subprocess new pre-removal script returned error exit status 1^M

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https://bugs.launchpad.net/bugs/1243033

Title:
  Cannot upgrade from 13.04 to 13.10 issue with python-appindicator ?

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

Bug description:
  While performing an upgrade from 13.04 to 13.10, some error message
  from python-appindicator occurred, and the installation aborted. No
  user operation was being performed

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