mate-session[6596]: WARNING: Unable to find provider '' of required component 'dock'
(mate-panel:6834): GLib-GObject-CRITICAL **: g_object_unref: assertion 'G_IS_OBJECT (object)' failed
(mate-panel:6834): GLib-GObject-CRITICAL **: g_object_unref: assertion 'G_IS_OBJECT (object)' failed
(mate-panel:6834): GLib-GObject-CRITICAL **: g_object_unref: assertion 'G_IS_OBJECT (object)' failed
(mate-panel:6834): GLib-GObject-CRITICAL **: g_object_unref: assertion 'G_IS_OBJECT (object)' failed
(mate-panel:6834): GLib-GObject-CRITICAL **: g_object_unref: assertion 'G_IS_OBJECT (object)' failed
(nm-applet:6987): Gdk-CRITICAL **: gdk_window_thaw_toplevel_updates: assertion 'window->update_and_descendants_freeze_count > 0' failed
(mate-panel:6834): GLib-GObject-CRITICAL **: g_object_unref: assertion 'G_IS_OBJECT (object)' failed
(mate-panel:6834): GLib-GObject-CRITICAL **: g_object_unref: assertion 'G_IS_OBJECT (object)' failed
(mate-panel:6834): GLib-GObject-CRITICAL **: g_object_unref: assertion 'G_IS_OBJECT (object)' failed
(mate-panel:6834): GLib-GObject-CRITICAL **: g_object_unref: assertion 'G_IS_OBJECT (object)' failed
(mate-panel:6834): GLib-GObject-CRITICAL **: g_object_unref: assertion 'G_IS_OBJECT (object)' failed
(mate-panel:6834): GLib-GObject-CRITICAL **: g_object_unref: assertion 'G_IS_OBJECT (object)' failed
(blueman-applet:6901): Gdk-CRITICAL **: gdk_window_thaw_toplevel_updates: assertion 'window->update_and_descendants_freeze_count > 0' failed
(audio-recorder:6959): GStreamer-CRITICAL **: gst_element_message_full: assertion 'GST_IS_ELEMENT (element)' failed
(audio-recorder:6959): GStreamer-CRITICAL **: gst_element_message_full: assertion 'GST_IS_ELEMENT (element)' failed
(audio-recorder:6959): Gdk-CRITICAL **: gdk_window_thaw_toplevel_updates: assertion 'window->update_and_descendants_freeze_count > 0' failed
(mate-appearance-properties:8483): Gtk-WARNING **: Theme directory  of theme oxygen has no size field
(mate-appearance-properties:8483): Gtk-WARNING **: Theme directory  of theme default.kde4 has no size field
(cheese:8817): GStreamer-CRITICAL **: gst_element_message_full: assertion 'GST_IS_ELEMENT (element)' failed
(cheese:8817): GStreamer-CRITICAL **: gst_element_message_full: assertion 'GST_IS_ELEMENT (element)' failed
(cheese:8817): cheese-WARNING **: Device '/dev/video2' is busy: gstv4l2object.c(3450): gst_v4l2_object_set_format_full (): /GstCameraBin:camerabin/GstWrapperCameraBinSrc:camera_source/GstBin:bin18/GstV4l2Src:v4l2src1:
(mate-panel:6834): GLib-GObject-WARNING **: invalid cast from 'GtkImageMenuItem' to 'ButtonWidget'
(mate-panel:6834): GLib-GObject-WARNING **: invalid cast from 'GtkImageMenuItem' to 'ButtonWidget'