This bug seems to be related to #894655
https://bugs.launchpad.net/ubuntu/+source/telepathy-mission-control-5/+bug/894655


russ@russ-laptop:~ $ gdb /usr/lib/telepathy/mission-control-5
GNU gdb (Ubuntu/Linaro 7.3-0ubuntu2) 7.3-2011.08
Copyright (C) 2011 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
For bug reporting instructions, please see:
<http://bugs.launchpad.net/gdb-linaro/>...
Reading symbols from /usr/lib/telepathy/mission-control-5...Reading symbols from /usr/lib/debug/usr/lib/telepathy/mission-control-5...done.
done.
(gdb) run
Starting program: /usr/lib/telepathy/mission-control-5 
[Thread debugging using libthread_db enabled]
mc-plugins-DEBUG: gabble/jabber/########.param-password should be secret
mc-plugins-DEBUG: haze/aim/########.param-password should be secret
mc-plugins-DEBUG: haze/sip/########.param-password should be secret
mc-plugins-DEBUG: haze/sip/########.param-password should be secret
mc-plugins-DEBUG: haze/aim/########.param-password should be secret
mc-plugins-DEBUG: gabble/jabber/########.param-password should be secret

mcd-WARNING **: Could not add client names match rule: Key 'arg0namespace' in match rule contains junk after argument number. Only 'path' is optionally valid ('arg0path' for example).


GLib-GIO-ERROR **: Settings schema 'im.telepathy.MissionControl.FromEmpathy' is not installed


Program received signal SIGTRAP, Trace/breakpoint trap.
g_logv (log_domain=0x7f4f93600341 "GLib-GIO", log_level=<optimized out>, format=0x7f4f93619e18 "Settings schema '%s' is not installed\n", 
    args1=0x7fffa659a0a8) at /build/buildd/glib2.0-2.31.0/./glib/gmessages.c:764
764	/build/buildd/glib2.0-2.31.0/./glib/gmessages.c: No such file or directory.
	in /build/buildd/glib2.0-2.31.0/./glib/gmessages.c
(gdb) bt
#0  g_logv (log_domain=0x7f4f93600341 "GLib-GIO", log_level=<optimized out>, format=0x7f4f93619e18 "Settings schema '%s' is not installed\n", 
    args1=0x7fffa659a0a8) at /build/buildd/glib2.0-2.31.0/./glib/gmessages.c:764
#1  0x00007f4f9233edf2 in g_log (log_domain=<optimized out>, log_level=<optimized out>, format=<optimized out>)
    at /build/buildd/glib2.0-2.31.0/./glib/gmessages.c:791
#2  0x00007f4f935b980d in g_settings_schema_new (name=0x234e760 "im.telepathy.MissionControl.FromEmpathy")
    at /build/buildd/glib2.0-2.31.0/./gio/gsettingsschema.c:285
#3  0x00007f4f935bc549 in g_settings_constructed (object=<optimized out>) at /build/buildd/glib2.0-2.31.0/./gio/gsettings.c:500
#4  0x00007f4f92818fe3 in g_object_newv (object_type=<optimized out>, n_parameters=37016960, parameters=<optimized out>)
    at /build/buildd/glib2.0-2.31.0/./gobject/gobject.c:1521
#5  0x00007f4f928196c6 in g_object_new_valist (object_type=37018912, first_property_name=<optimized out>, var_args=0x7fffa659a3e8)
    at /build/buildd/glib2.0-2.31.0/./gobject/gobject.c:1610
#6  0x00007f4f928199d4 in g_object_new (object_type=37018912, first_property_name=0x7f4f9361a02b "schema")
    at /build/buildd/glib2.0-2.31.0/./gobject/gobject.c:1325
#7  0x0000000000412b07 in mcd_kludge_transport_constructed (object=0x230dd40) at kludge-transport.c:89
#8  0x00007f4f92818fe3 in g_object_newv (object_type=<optimized out>, n_parameters=0, parameters=<optimized out>)
    at /build/buildd/glib2.0-2.31.0/./gobject/gobject.c:1521
#9  0x00007f4f928199ec in g_object_new (object_type=36782512, first_property_name=0x0) at /build/buildd/glib2.0-2.31.0/./gobject/gobject.c:1322
#10 0x0000000000412c82 in mcd_kludge_transport_new () at kludge-transport.c:258
#11 mcd_kludge_transport_install (plugin=0x231b010) at kludge-transport.c:265
#12 0x00000000004110c4 in mcd_master_constructor (type=<optimized out>, n_params=2, params=0x230f000) at mcd-master.c:474
#13 0x00007f4f92818b04 in g_object_newv (object_type=<optimized out>, n_parameters=36761648, parameters=<optimized out>)
    at /build/buildd/glib2.0-2.31.0/./gobject/gobject.c:1493
#14 0x00007f4f928196c6 in g_object_new_valist (object_type=36738192, first_property_name=<optimized out>, var_args=0x7fffa659a9c8)
    at /build/buildd/glib2.0-2.31.0/./gobject/gobject.c:1610
#15 0x00007f4f928199d4 in g_object_new (object_type=36738192, first_property_name=0x4415de "dbus-daemon")
    at /build/buildd/glib2.0-2.31.0/./gobject/gobject.c:1325
#16 0x0000000000410599 in mcd_service_new () at mcd-service.c:183
#17 0x000000000040e7a4 in main (argc=<optimized out>, argv=<optimized out>) at mc-server.c:70
(gdb)