StacktraceTop: empathy_video_widget_get_element (widget=0x0) display_video_preview (self=<value optimized out>, empathy_call_window_set_send_video (window=0x8f4b048, enable_camera (self=0x8f4b048) at empathy-call-window.c:852 g_cclosure_marshal_VOID__OBJECT ()
StacktraceTop: video_widget_ get_element (widget=0x0) video_preview (self=<value optimized out>, call_window_ set_send_ video (window=0x8f4b048, call-window. c:852 marshal_ VOID__OBJECT ()
empathy_
display_
empathy_
enable_camera (self=0x8f4b048) at empathy-
g_cclosure_