(empathy-call-chandler:4334): tp-glib-DEBUG: tp_connection_got_interfaces_cb: 0x8362b0: Introspected interfaces
(empathy-call-chandler:4334): tp-glib-DEBUG: tp_proxy_borrow_interface_by_id: 0x8362b0: org.freedesktop.Telepathy.Connection.Interface.Aliasing DBusGProxy is 0x633d20
(empathy-call-chandler:4334): tp-glib-DEBUG: _tp_proxy_pending_call_dgproxy_destroy: 0x832460: DBusGProxy 0x633d20 invalidated
(empathy-call-chandler:4334): tp-glib-DEBUG: got_aliasing_flags: Introspected aliasing flags: 0x1
(empathy-call-chandler:4334): tp-glib-DEBUG: tp_connection_continue_introspection: 0x8362b0: connection ready
** (telepathy-stream-engine:4336): DEBUG: not using realtime scheduling, enable through STREAM_ENGINE_REALTIME env
(telepathy-stream-engine:4336): tp-glib-DEBUG: tp_proxy_borrow_interface_by_id: 0x62dd60: org.freedesktop.DBus DBusGProxy is 0x6314c0
** (telepathy-stream-engine:4336): DEBUG: Requesting org.freedesktop.Telepathy.StreamEngine
(telepathy-stream-engine:4336): tp-glib-DEBUG: _tp_proxy_pending_call_dgproxy_destroy: 0x631580: DBusGProxy 0x6314c0 invalidated
** (telepathy-stream-engine:4336): DEBUG: registering StreamEngine at /org/freedesktop/Telepathy/StreamEngine
** (telepathy-stream-engine:4336): DEBUG: started
(empathy-call-chandler:4334): tp-glib-DEBUG: _tp_proxy_pending_call_dgproxy_destroy: 0x634360: DBusGProxy 0x634300 invalidated
TpCall: Error calling handle channel: Method "HandleChannel" with signature "sosouu" on interface "org.freedesktop.Telepathy.ChannelHandler" doesn't exist

(empathy-call-chandler:4334): tp-glib-DEBUG: _tp_proxy_pending_call_dgproxy_destroy: 0x6b6300: DBusGProxy 0x6b62a0 invalidated
TpCall: Error adding preview window: Method "AddPreviewWindow" with signature "u" on interface "org.freedesktop.Telepathy.StreamEngine" doesn't exist