After trying to start Nautilus from Unity and failing, I tried invoking it from the terminal.
$ nautilus .
(nautilus:20662): GLib-GIO-CRITICAL **: g_dbus_interface_skeleton_unexport: assertion 'interface_->priv->connections != NULL' failed
(nautilus:20662): GLib-GIO-CRITICAL **: g_dbus_interface_skeleton_unexport: assertion 'interface_->priv->connections != NULL' failed Could not register the application: Timeout was reached
(nautilus:20662): Gtk-CRITICAL **: gtk_icon_theme_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed
(nautilus:20662): GLib-GObject-WARNING **: invalid (NULL) pointer instance
(nautilus:20662): GLib-GObject-CRITICAL **: g_signal_connect_object: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed
After trying to start Nautilus from Unity and failing, I tried invoking it from the terminal.
$ nautilus .
(nautilus:20662): GLib-GIO-CRITICAL **: g_dbus_ interface_ skeleton_ unexport: assertion 'interface_ ->priv- >connections != NULL' failed
(nautilus:20662): GLib-GIO-CRITICAL **: g_dbus_ interface_ skeleton_ unexport: assertion 'interface_ ->priv- >connections != NULL' failed
Could not register the application: Timeout was reached
(nautilus:20662): Gtk-CRITICAL **: gtk_icon_ theme_get_ for_screen: assertion 'GDK_IS_SCREEN (screen)' failed
(nautilus:20662): GLib-GObject- WARNING **: invalid (NULL) pointer instance
(nautilus:20662): GLib-GObject- CRITICAL **: g_signal_ connect_ object: assertion 'G_TYPE_ CHECK_INSTANCE (instance)' failed