(zeitgeist-datahub:2073): GLib-GObject-CRITICAL **: g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed

Hi,

I'm seeing these zeitgeist-datahub warnings and criticals in ~/.cache/upstart/dbus.log every time I restart:

ctivating service name='org.gnome.zeitgeist.Engine'
Successfully activated service 'com.canonical.Unity.Scope.Applications'
Activating service name='org.gnome.zeitgeist.SimpleIndexer'
Successfully activated service 'org.gnome.zeitgeist.Engine'
** Message: Index must be upgraded. Doing full rebuild
Successfully activated service 'org.gnome.zeitgeist.SimpleIndexer'

(zeitgeist-datahub:2073): GLib-GObject-WARNING **: invalid (NULL) pointer instance

(zeitgeist-datahub:2073): GLib-GObject-CRITICAL **: g_signal_connect_data: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed

Any chance someone could take a look?

Thanks,

Haw

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: zeitgeist-datahub 0.9.14-0ubuntu3
ProcVersionSignature: Ubuntu 3.11.0-12.19-generic 3.11.3
Uname: Linux 3.11.0-12-generic x86_64
ApportVersion: 2.12.5-0ubuntu2
Architecture: amd64
Date: Fri Oct 11 23:40:46 2013
MarkForUpload: True
SourcePackage: zeitgeist
UpgradeStatus: No upgrade log present (probably fresh install)