apt-clone crashed with SystemError in _restore_package_selection_in_cache(): E:Unable to correct problems, you have held broken packages.

[Bob Jonkman]

Binary package hint: apt-clone

Performing an upgrade from 8.04.3, with the old installation in an unknown state of upkeep (hasn't been used in months)

ubuntu@ubuntu:~$ lsb_release -rd
Description: Ubuntu Natty (development branch)
Release: 11.04

ubuntu@ubuntu:~$ apt-cache policy ubiquity
ubiquity:
  Installed: 2.6.5
  Candidate: 2.6.5
  Version table:
 *** 2.6.5 0
        500 http://archive.ubuntu.com/ubuntu/ natty/main i386 Packages
        100 /var/lib/dpkg/status

ubuntu@ubuntu:~$ apt-cache policy apt-clone
apt-clone:
  Installed: 0.1.5
  Candidate: 0.1.5
  Version table:
 *** 0.1.5 0
        500 http://archive.ubuntu.com/ubuntu/ natty/main i386 Packages
        100 /var/lib/dpkg/status

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: apt-clone 0.1.5
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic i686
Architecture: i386
Date: Wed Apr 27 09:47:20 2011
ExecutablePath: /usr/bin/apt-clone
InterpreterPath: /usr/bin/python2.7
LiveMediaBuild: Ubuntu 11.04 "Natty Narwhal" - Beta i386 (20110413)
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/bin/apt-clone restore-new-distro /target/ubiquity-apt-clone/apt-clone-state-hostname.tar.gz natty --destination /target
ProcEnviron:
 LANGUAGE=en_CA.UTF-8
 PATH=(custom, no user)
 LANG=en_CA.UTF-8
 SHELL=/bin/bash
 LC_COLLATE=C
PythonArgs: ['/usr/bin/apt-clone', 'restore-new-distro', '/target/ubiquity-apt-clone/apt-clone-state-hostname.tar.gz', 'natty', '--destination', '/target']
SourcePackage: apt-clone
Title: apt-clone crashed with SystemError in _restore_package_selection_in_cache(): E:Unable to correct problems, you have held broken packages.
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make Ubuntu better. This particular crash has already been reported and is a duplicate of bug #758013, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.