[Bug 1101881] Re: software-properties-gtk crashed with TypeError in __new__(): object of type 'NoneType' has no len()

[Brian Murray]

While it's trivial to avoid the Traceback, I think the root cause of the
crash should be investigated.  Looking at the errors page for the crash
the majority of the crashes are from armhf systems while there are also
some from arm64 and ppc64el.

Given that there are only MirrorsFile information for amd64 and i386 we
should maybe just hide the "Download from:" drop down box in software-
properties.

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https://bugs.launchpad.net/bugs/1101881

Title:
  software-properties-gtk crashed with TypeError in __new__(): object of
  type 'NoneType' has no len()

Status in software-properties package in Ubuntu:
  Triaged

Bug description:
  on nexus 7

  ProblemType: Crash
  DistroRelease: Ubuntu 13.04
  Package: software-properties-gtk 0.92.13
  Uname: Linux 3.1.10-8-nexus7 armv7l
  ApportVersion: 2.8-0ubuntu2
  Architecture: armhf
  CrashCounter: 1
  Date: Sat Jan 19 14:44:31 2013
  ExecutablePath: /usr/bin/software-properties-gtk
  InstallationDate: Installed on 2013-01-16 (3 days ago)
  InstallationMedia: Ubuntu Raring Ringtail (development branch) - armhf (20130115-15:18)
  InterpreterPath: /usr/bin/python3.3
  MarkForUpload: True
  PackageArchitecture: all
  ProcCmdline: /usr/bin/python3 /usr/bin/software-properties-gtk --open-tab 2
  ProcEnviron:
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  PythonArgs: ['/usr/bin/software-properties-gtk', '--open-tab', '2']
  SourcePackage: software-properties
  Title: software-properties-gtk crashed with TypeError in __new__(): object of type 'NoneType' has no len()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

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