gnome-activity-journal crashed with TypeError in get_tokens(): decode() argument 1 must be string, not None

[hellojoker]

Binary package hint: gnome-activity-journal

I tried to cancel some activities

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: gnome-activity-journal 0.5.0.1-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-7.39-generic 2.6.38
Uname: Linux 2.6.38-7-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
Date: Wed Mar 30 02:16:37 2011
ExecutablePath: /usr/bin/gnome-activity-journal
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha amd64 (20110321)
InterpreterPath: /usr/bin/python2.7
ProcCmdline: python /usr/bin/gnome-activity-journal
ProcEnviron:
 LANGUAGE=it_IT:en
 LANG=it_IT.UTF-8
 SHELL=/bin/bash
PythonArgs: ['/usr/bin/gnome-activity-journal']
SourcePackage: gnome-activity-journal
Title: gnome-activity-journal crashed with TypeError in get_tokens(): decode() argument 1 must be string, not None
UpgradeStatus: Upgraded to natty on 2011-03-25 (4 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 Ubuntu better. This particular crash has already been reported and is a duplicate of bug #734412, 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.