mission-control-5 crashed with SIGABRT in g_assertion_message()

[Mozaic]

Crash to connect IRC salon when empathy start.

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: telepathy-mission-control-5 1:5.11.0-1ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-18.29-generic 3.2.9
Uname: Linux 3.2.0-18-generic x86_64
ApportVersion: 1.94.1-0ubuntu2
Architecture: amd64
Date: Tue Mar 13 17:42:37 2012
ExecutablePath: /usr/lib/telepathy/mission-control-5
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120301)
ProcCmdline: BOOT_IMAGE=/boot/vmlinuz-3.2.0-18-generic root=UUID=747ac4e1-2d17-44ab-a622-73d618977408 ro quiet splash vt.handoff=7
Signal: 6
SourcePackage: telepathy-mission-control-5
StacktraceTop:
 raise () from /lib/x86_64-linux-gnu/libc.so.6
 abort () from /lib/x86_64-linux-gnu/libc.so.6
 g_assertion_message () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 g_assertion_message_expr () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 ?? () from /usr/lib/libtelepathy-glib.so.0
Title: mission-control-5 crashed with SIGABRT in raise()
UpgradeStatus: Upgraded to precise on 2012-03-12 (1 days ago)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

[Apport retracing service (apport)]

StacktraceTop:
 g_assertion_message (domain=<optimized out>, file=<optimized out>, line=<optimized out>, func=0x7ffe14e06c60 "_tp_channel_contacts_handle_owners_changed", message=0x1126410 "assertion failed: (self->priv->group_contact_owners != NULL)") at /build/buildd/glib2.0-2.31.20/./glib/gtestutils.c:1860
 g_assertion_message_expr (domain=0x7ffe14def4c6 "tp-glib", file=0x7ffe14e06a7b "channel-contacts.c", line=743, func=0x7ffe14e06c60 "_tp_channel_contacts_handle_owners_changed", expr=<optimized out>) at /build/buildd/glib2.0-2.31.20/./glib/gtestutils.c:1871
 _tp_channel_contacts_handle_owners_changed (self=0x1145830, added=<optimized out>, removed=0x1147b60, identifiers=0x11651e0) at channel-contacts.c:743
 _tp_cli_channel_interface_group_invoke_callback_for_handle_owners_changed_detailed (tpproxy=0x1145830, error=<optimized out>, args=0x11302e0, generic_callback=0x7ffe14d33be0 <tp_channel_handle_owners_changed_detailed_cb>, user_data=<optimized out>, weak_object=<optimized out>) at _gen/tp-cli-channel-body.h:3246
 tp_proxy_signal_invocation_run (p=0x1133da0) at proxy-signals.c:268