package update-manager 1:0.87.6 failed to install/upgrade: subprocess pre-installation script returned error exit status 1

[ahfuji]

Binary package hint: update-manager

$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=8.04
DISTRIB_CODENAME=hardy
DISTRIB_DESCRIPTION="Ubuntu hardy (development branch)"

$ dpkg -l update-manager
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Installed/Config-f/Unpacked/Failed-cfg/Half-inst/t-aWait/T-pend
|/ Err?=(none)/Hold/Reinst-required/X=both-problems (Status,Err: uppercase=bad)
||/ Name Version Description
+++-==============-==============-============================================
ii update-manager 1:0.87.6 GNOME application that manages apt updates

On a safe-upgrading process, the crush occured.

ProblemType: Package
Architecture: i386
Date: Tue Feb 19 07:23:29 2008
DistroRelease: Ubuntu 8.04
ErrorMessage: subprocess pre-installation script returned error exit status 1
Package: update-manager 1:0.87.6
PackageArchitecture: all
SourcePackage: update-manager
Title: package update-manager 1:0.87.6 failed to install/upgrade: subprocess pre-installation script returned error exit status 1
Uname: Linux azure 2.6.24-8-generic #1 SMP Thu Feb 14 20:40:45 UTC 2008 i686 GNU/Linux

[Caroline Ford (secretlondon)]

Traceback (most recent call last):

  File "/usr/bin/pycentral", line 1593, in <module>

    main()

  File "/usr/bin/pycentral", line 1587, in main

    rv = action.run(global_options)

  File "/usr/bin/pycentral", line 1075, in run

    requested = pyversions.requested_versions_for_runtime(version_field, version_only=True)

  File "/usr/share/pycentral-data/pyversions.py", line 172, in requested_versions_for_runtime

    vinfo = parse_versions(vstring)

  File "/usr/share/pycentral-data/pyversions.py", line 58, in parse_versions

    raise ValueError, 'error parsing Python-Version attribute'

ValueError: error parsing Python-Version attribute

dpkg: error processing /var/cache/apt/archives/update-manager_1%3a0.87.8_all.deb (--unpack):

 subprocess pre-installation script returned error exit status 1