2004-12-01  Michael Natterer  <mitch@gimp.org>

	* app/display/gimpdisplayshell-appearance.c
	* app/display/gimpdisplayshell.c
	* app/widgets/gimpdockable.c
	* app/widgets/gimptexteditor.c
	* app/widgets/gimptoolbox.c: check if gimp_ui_manager_ui_get()
	actually returns something. Prevents crashes caused by missing
	ui manager xml files. Fixes bug #159346.