checkbox crashed with TypeError in emit_signal(): Don't know which D-Bus type to use to encode type "NoneType"

[Alexander Sell]

after rebooting the system, this appears.

ProblemType: Crash
DistroRelease: Ubuntu 14.04
Package: checkbox-ng 0.1-2
ProcVersionSignature: Ubuntu 3.13.0-19.40-generic 3.13.6
Uname: Linux 3.13.0-19-generic x86_64
ApportVersion: 2.13.3-0ubuntu1
Architecture: amd64
CurrentDesktop: Unity
Date: Tue Mar 25 08:33:44 2014
EcryptfsInUse: Yes
ExecutablePath: /usr/bin/checkbox
InstallationDate: Installed on 2014-03-12 (12 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140311)
InterpreterPath: /usr/bin/python3.4
PackageArchitecture: all
ProcCmdline: /usr/bin/python3 /usr/bin/checkbox service
ProcEnviron:
 XDG_RUNTIME_DIR=<set>
 SHELL=/bin/bash
 LANGUAGE=de_DE
 PATH=(custom, no user)
 LANG=de_DE.UTF-8
PythonArgs: ['/usr/bin/checkbox', 'service']
SourcePackage: checkbox-ng
Title: checkbox crashed with TypeError in emit_signal(): Don't know which D-Bus type to use to encode type "NoneType"
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin mythtv plugdev sambashare sudo

[Alexander Sell (ubuntu.alex)]

It did not appear when reboot, it appears when type in the dash "driver" and start "system testing"

[Sebastien Bacher (seb128)]

Seems like the new plainbox make checkbox quite unhappy, that is ranking 8 on the daily e.u.c trusy view
https://errors.ubuntu.com/problem/4524428eb4ee8e9606c12a4d7549743756de2d72

[Zygmunt Krynicki (zyga)]

Related to bug 1297665

[Zygmunt Krynicki (zyga)]

This should be fixed after checkbox-0.2.2-1 migrates from -proposed to main

[Zygmunt Krynicki (zyga)]

This was found to be a faulty implementation of tr_summary() in job.py

[Zygmunt Krynicki (zyga)]

Verified fixed with our daily PPA