[Bug 985368] Re: ubiquity crashed with AttributeError in on_link_clicked(): 'NoneType' object has no attribute 'split'

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** Branch linked: lp:ubiquity

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https://bugs.launchpad.net/bugs/985368

Title:
  ubiquity crashed with AttributeError in on_link_clicked(): 'NoneType'
  object has no attribute 'split'

Status in “ubiquity” package in Ubuntu:
  Fix Committed

Bug description:
  ubiquity crashed just after click on "update this installer"  in the
  first step.

  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: Thu Apr 19 03:12:05 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/3041/environ'
  PythonArgs: ['/usr/lib/ubiquity/bin/ubiquity', '--greeter', '--only']
  SourcePackage: ubiquity
  Title: ubiquity crashed with AttributeError in on_link_clicked(): 'NoneType' object has no attribute 'split'
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:

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