[Bug 971658] Re: ubiquity crashed with AttributeError in debconf_escape(): 'NoneType' object has no attribute 'replace'

[Apport retracing service]

*** This bug is a duplicate of bug 657158 ***
    https://bugs.launchpad.net/bugs/657158

Thank you for taking the time to report this crash and helping to make
this software better.  This particular crash has already been reported
and is a duplicate of bug #657158, 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.

** Tags removed: need-duplicate-check

** Attachment removed: "ProcMaps.txt"
   https://bugs.launchpad.net/bugs/971658/+attachment/2989886/+files/ProcMaps.txt

** Attachment removed: "ProcStatus.txt"
   https://bugs.launchpad.net/bugs/971658/+attachment/2989887/+files/ProcStatus.txt

** Visibility changed to: Public

** This bug has been marked a duplicate of private bug 657158

** Visibility changed to: Public

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https://bugs.launchpad.net/bugs/971658

Title:
  ubiquity crashed with AttributeError in debconf_escape(): 'NoneType'
  object has no attribute 'replace'

Status in “ubiquity” package in Ubuntu:
  New

Bug description:
  installing on a raid0 hw configuration.  Grub failed to install.
  System restarted.

  ProblemType: Crash
  DistroRelease: Ubuntu 12.04
  Package: ubiquity 2.10.4
  ProcVersionSignature: Ubuntu 3.2.0-20.33-generic 3.2.12
  Uname: Linux 3.2.0-20-generic x86_64
  ApportVersion: 1.95-0ubuntu1
  Architecture: amd64
  CasperVersion: 1.312
  Date: Mon Apr  2 15:54:49 2012
  ExecutablePath: /usr/lib/ubiquity/bin/ubiquity
  InstallCmdLine: file=/cdrom/preseed/ubuntu.seed boot=casper initrd=/casper/initrd.lz quiet splash -- maybe-ubiquity
  InterpreterPath: /usr/bin/python2.7
  LiveMediaBuild: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120328)
  ProcCmdline: /usr/bin/python /usr/lib/ubiquity/bin/ubiquity --greeter --only
  ProcEnviron: Error: [Errno 13] Permission denied: '/proc/3173/environ'
  PythonArgs: ['/usr/lib/ubiquity/bin/ubiquity', '--greeter', '--only']
  SourcePackage: ubiquity
  Title: ubiquity crashed with AttributeError in debconf_escape(): 'NoneType' object has no attribute 'replace'
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:

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