[Bug 838048] Re: ubiquity crashed with TypeError in __new__(): object of type 'NoneType' has no len()

[Jean-Baptiste Lallement]

I got this crash with the following steps:
- Wireless was disabled on nm-applet
- Launch ubiquity
- Proceed to step 'Wifi'
- Select 'Connect to this network'

** Changed in: ubiquity (Ubuntu)
     Assignee: (unassigned) => Evan Dandrea (ev)

** Changed in: ubiquity (Ubuntu)
   Importance: Undecided => High

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Title:
  ubiquity crashed with TypeError in __new__(): object of type
  'NoneType' has no len()

Status in “ubiquity” package in Ubuntu:
  Confirmed

Bug description:
  Description:	Ubuntu oneiric (development branch)
  Release:	11.10
  ubiquity:
    Installed: 2.7.24
    Candidate: 2.7.24
    Version table:
   *** 2.7.24 0
          500 http://archive.ubuntu.com/ubuntu/ oneiric/main i386 Packages
          100 /var/lib/dpkg/status
  Expected Outcome: There should be no error reported.
  Actual Outcome: An error was reported when switching between "I don't want to connect to a wi-fi network right now" and "Connect to this network".

  NOTE: There is no /var/log/partman file available as I had not reached
  the Partitioning Part of the Installation Setup yet.

  ProblemType: Crash
  DistroRelease: Ubuntu 11.10
  Package: ubiquity 2.7.24
  ProcVersionSignature: Ubuntu 3.0.0-9.15-generic 3.0.3
  Uname: Linux 3.0.0-9-generic i686
  Architecture: i386
  CasperVersion: 1.280
  Date: Wed Aug 31 12:14:16 2011
  ExecutablePath: /usr/lib/ubiquity/bin/ubiquity
  InterpreterPath: /usr/bin/python2.7
  LiveMediaBuild: Ubuntu 11.10 "Oneiric Ocelot" - Beta i386 (20110831)
  ProcCmdline: /usr/bin/python /usr/lib/ubiquity/bin/ubiquity gtk_ui
  ProcEnviron: Error: [Errno 13] Permission denied: '/proc/6823/environ'
  PythonArgs: ['/usr/lib/ubiquity/bin/ubiquity', 'gtk_ui']
  SourcePackage: ubiquity
  Title: ubiquity crashed with TypeError in __new__(): object of type 'NoneType' has no len()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:

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