gnome-language-selector crashed with KeyError in __getitem__(): "The cache has no package named ''"

[David]

After installing Ubuntu 12.04 I wanted to change sytem language to Hungarian (I am Hungarian), and the "Language Support" programme crashed soon after checking the avaible translations, so I couldn't change the system language.
But exclude this you've made great work with Ubuntu 12.04 so far. I wish it would be able to be corrected.

David

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: language-selector-gnome 0.62
ProcVersionSignature: Ubuntu 3.2.0-11.19-generic 3.2.1
Uname: Linux 3.2.0-11-generic i686
ApportVersion: 1.91-0ubuntu1
Architecture: i386
Date: Sat Jan 28 15:54:00 2012
DuplicateOf: https://bugs.launchpad.net/bugs/843430
ExecutablePath: /usr/bin/gnome-language-selector
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
InterpreterPath: /usr/bin/python2.7
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/bin/gnome-language-selector
ProcEnviron:
 SHELL=/bin/bash
 PATH=(custom, no user)
 LANG=hu_HU.UTF-8
PythonArgs: ['/usr/bin/gnome-language-selector']
SourcePackage: language-selector
Title: gnome-language-selector crashed with KeyError in __getitem__(): "The cache has no package named ''"
UpgradeStatus: Upgraded to precise on 2012-01-28 (0 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make this software better. This particular crash has already been reported and is a duplicate of bug #843430, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.