Making a call from empathy to empathy using gabble, if I enable video, disable it, and enable it again, gabble aborts.

(telepathy-gabble:31985): tp-yell-DEBUG: tpy_base_call_content_constructed: Registering /org/freedesktop/Telepathy/Connection/gabble/jabber/emilio_2epozuelo_40collabora_2eco_2euk_2f5ab67c28/CallChannel0/Content_video_2

** ERROR **: Failed to register GObject with DBusConnection
aborting...

Program received signal SIGABRT, Aborted.
0x00007ffff5303165 in raise (sig=<value optimized out>) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
64	../nptl/sysdeps/unix/sysv/linux/raise.c: No such file or directory.
	in ../nptl/sysdeps/unix/sysv/linux/raise.c
(gdb) bt
#0  0x00007ffff5303165 in raise (sig=<value optimized out>) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
#1  0x00007ffff5305f70 in abort () at abort.c:92
#2  0x00007ffff568051a in g_logv (log_domain=<value optimized out>, log_level=<value optimized out>, 
    format=<value optimized out>, args1=0x7fffffffd9f0) at /tmp/buildd/glib2.0-2.28.1/./glib/gmessages.c:557
#3  0x00007ffff56805a3 in g_log (log_domain=0x7cf1 <Address 0x7cf1 out of bounds>, log_level=31985, 
    format=0x6 <Address 0x6 out of bounds>) at /tmp/buildd/glib2.0-2.28.1/./glib/gmessages.c:577
#4  0x00007ffff7bc813d in dbus_g_connection_register_g_object (connection=0x77bcb8, 
    at_path=0xebe650 "/org/freedesktop/Telepathy/Connection/gabble/jabber/emilio_2epozuelo_40collabora_2eco_2euk_2f5ab67c28/CallChannel0/Content_video_2", object=0xb3a2e0) at dbus-gobject.c:2594
#5  0x00007ffff5f40995 in g_object_newv (object_type=<value optimized out>, n_parameters=15358656, 
    parameters=0x7ffff591ac88) at /tmp/buildd/glib2.0-2.28.1/./gobject/gobject.c:1507
#6  0x00007ffff5f411dd in g_object_new_valist (object_type=15359280, first_property_name=0x0, var_args=0x7fffffffdd00)
    at /tmp/buildd/glib2.0-2.28.1/./gobject/gobject.c:1596
#7  0x00007ffff5f414f1 in g_object_new (object_type=15359280, first_property_name=0x5067af "connection")
    at /tmp/buildd/glib2.0-2.28.1/./gobject/gobject.c:1311
#8  0x00000000004f7a8b in gabble_base_call_channel_add_content (self=0xe5b000, name=0xe84c00 "video", 
    mtype=<value optimized out>, disposition=<value optimized out>) at base-call-channel.c:231
#9  0x00000000004ccb5f in call_channel_add_content (base=0xe5b000, name=0xe84c00 "video", type=<value optimized out>, 
    error=<value optimized out>) at call-channel.c:581
#10 0x00000000004f5c1d in tpy_base_call_channel_add_content_dbus (iface=0xe5b000, name=0xe84c00 "video", 
    mtype=TP_MEDIA_STREAM_TYPE_VIDEO, context=0xe5d000) at base-call-channel.c:756
#11 0x00007ffff7bc99db in invoke_object_method (connection=<value optimized out>, message=0xea6e70, 
    user_data=<value optimized out>) at dbus-gobject.c:1724
#12 object_registration_message (connection=<value optimized out>, message=0xea6e70, user_data=<value optimized out>)
    at dbus-gobject.c:1944
#13 0x00007ffff799571e in _dbus_object_tree_dispatch_and_unlock (tree=0x77b970, message=0xea6e70)
    at dbus-object-tree.c:858
#14 0x00007ffff7988ccc in dbus_connection_dispatch (connection=0x77bcb0) at dbus-connection.c:4688
#15 0x00007ffff7bc5bb5 in message_queue_dispatch (source=<value optimized out>, callback=<value optimized out>, 
    user_data=<value optimized out>) at dbus-gmain.c:101
#16 0x00007ffff56752e2 in g_main_dispatch (context=0x77eb20) at /tmp/buildd/glib2.0-2.28.1/./glib/gmain.c:2440
#17 g_main_context_dispatch (context=0x77eb20) at /tmp/buildd/glib2.0-2.28.1/./glib/gmain.c:3013
#18 0x00007ffff56799a8 in g_main_context_iterate (context=0x77eb20, block=<value optimized out>, 
    dispatch=<value optimized out>, self=<value optimized out>) at /tmp/buildd/glib2.0-2.28.1/./glib/gmain.c:3091
#19 0x00007ffff5679eb5 in g_main_loop_run (loop=0x784fa0) at /tmp/buildd/glib2.0-2.28.1/./glib/gmain.c:3299
#20 0x00007ffff6a3221f in tp_run_connection_manager (prog_name=<value optimized out>, version=<value optimized out>, 
    construct_cm=<value optimized out>, argc=<value optimized out>, argv=<value optimized out>) at run.c:285
#21 0x000000000043427a in gabble_main (argc=1, argv=0x7fffffffe588) at gabble.c:175
#22 0x00007ffff52efc4d in __libc_start_main (main=<value optimized out>, argc=<value optimized out>, 
    ubp_av=<value optimized out>, init=<value optimized out>, fini=<value optimized out>, 
    rtld_fini=<value optimized out>, stack_end=0x7fffffffe578) at libc-start.c:228
#23 0x0000000000434069 in _start ()
(gdb)