[Bug 1063292] Re: Downgrade from 12.10 to 12.04 appears to succeed but reports crash in the end

[Dmitrijs Ledkovs]

*** This bug is a duplicate of bug 1066347 ***
    https://bugs.launchpad.net/bugs/1066347

** This bug has been marked a duplicate of bug 1066347
   "Reinstall Ubuntu" failed - apt-clone crashes with: KeyError: "filename './etc/apt/sources.list' not found" ilne 1886 in getmember in tarfile.py

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https://bugs.launchpad.net/bugs/1063292

Title:
  Downgrade from 12.10 to 12.04 appears to succeed but reports crash in
  the end

Status in “ubiquity” package in Ubuntu:
  Confirmed

Bug description:
  Reinstalling Ubuntu 12.04 over 12.10, including;
   - reuse of / mount
   - moving swap space
   - reuse of /home mount

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: ubiquity 2.10.20
  ProcVersionSignature: Ubuntu 3.2.0-29.46-generic 3.2.24
  Uname: Linux 3.2.0-29-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.0.1-0ubuntu12
  Architecture: amd64
  CasperVersion: 1.315
  Date: Sun Oct  7 16:54:16 2012
  InstallCmdLine: noprompt cdrom-detect/try-usb=true file=/cdrom/preseed/ubuntu.seed boot=casper persistent initrd=/casper/initrd.lz splash -- BOOT_IMAGE=/casper/vmlinuz
  LiveMediaBuild: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120823.1)
  ProcEnviron:
   LANGUAGE=en_GB.UTF-8
   TERM=unknown
   PATH=(custom, no user)
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  SourcePackage: ubiquity
  UpgradeStatus: No upgrade log present (probably fresh install)

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