Thanks for your report. I see that the LANG environment variable is set to C, which is not normal in a desktop session (it should be some .UTF-8 locale), and I think it explains the crash. Unless you set LANG=C yourself, that value may be related to <https://launchpad.net/bugs/1723404>.
Can you please show us the output from these terminal commands: cat /etc/default/locale locale -a locale ** Changed in: language-selector (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to language-selector in Ubuntu. https://bugs.launchpad.net/bugs/1723318 Title: gnome-language-selector crashed with TypeError in getCurrentInputMethod(): 'NoneType' object is not subscriptable Status in language-selector package in Ubuntu: Incomplete Bug description: - fresh Lubuntu 17.10 install with daily iso from 10/12/2017 incl. latest updates - opening of Start => Preferences => Language Support results in the error ProblemType: Crash DistroRelease: Ubuntu 17.10 Package: language-selector-gnome 0.180 ProcVersionSignature: Ubuntu 4.13.0-15.16-generic 4.13.4 Uname: Linux 4.13.0-15-generic x86_64 ApportVersion: 2.20.7-0ubuntu3 Architecture: amd64 CurrentDesktop: LXDE Date: Fri Oct 13 06:11:35 2017 ExecutablePath: /usr/bin/gnome-language-selector InstallationDate: Installed on 2017-10-13 (0 days ago) InstallationMedia: Lubuntu 17.10 "Artful Aardvark" - Beta amd64 (20171011) InterpreterPath: /usr/bin/python3.6 PackageArchitecture: all ProcCmdline: /usr/bin/python3 /usr/bin/gnome-language-selector ProcEnviron: LANGUAGE=en PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=C SHELL=/bin/bash Python3Details: /usr/bin/python3.6, Python 3.6.3, python3-minimal, 3.6.3-0ubuntu2 PythonArgs: ['/usr/bin/gnome-language-selector'] PythonDetails: /home/steven/Error: command ['which', 'python'] failed with exit code 1:, Error: [Errno 2] No such file or directory: "/home/steven/Error: command ['which', 'python'] failed with exit code 1:": "/home/steven/Error: command ['which', 'python'] failed with exit code 1:", unpackaged SourcePackage: language-selector Title: gnome-language-selector crashed with TypeError in getCurrentInputMethod(): 'NoneType' object is not subscriptable 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/language-selector/+bug/1723318/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp