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. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to software-properties in Ubuntu. 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/software-properties/+bug/1101881/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
