RS in course publish process if someone open the catalog chooser, click ok without choosing an entry

RedScreen on 
2013-10-21 22:07:59,759 [ajp-8021-11] ERROR OLATRuntimeException - OLAT::ERROR ^%^ N1-E28 ^%^ org.olat.core.logging
https://xxx/bbw/auth/1%3A1%3A1054884776%3A2%3A0%3Acid%3Acmd.repo.course/
Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0)
**RedScreen** null ::_::
<dispatchinfo>
	<componentinfo>
		<compname>ok</compname>
		<compclass>org.olat.core.gui.components.link.Link</compclass>
		<extendedinfo>n/a</extendedinfo>
		<event>
			<class&gt;org.olat.core.gui.control.Event</class&gt;
			<command>ok</command>
			<tostring>com:ok,org.olat.core.gui.control.Event@dfb</tostring>
		</event>
	</componentinfo>
	<controllerinfo>
		<controllername>org.olat.course.editor.PublishStepCatalog$SpecialCatalogEntryAddController</controllername>
		<controllername>org.olat.course.editor.PublishStepCatalog$PublishStepCatalogForm</controllername>
		<controllername>org.olat.core.gui.control.generic.wizard.StepsMainRunController</controllername>
		<controllername>org.olat.course.editor.EditorMainController</controllername>
		<controllername>org.olat.course.run.RunMainController</controllername>
		<controllername>org.olat.core.commons.fullWebApp.BaseFullWebappController</controllername>
		<controllername>org.olat.core.commons.chiefcontrollers.controller.simple.SimpleBaseController</controllername>
		<controllername>org.olat.core.commons.chiefcontrollers.BaseChiefController</controllername>
	</controllerinfo>
</dispatchinfo>
>>> stack of 1.cause::org.olat.core.logging.OLATRuntimeException: null
-> at org.olat.core.gui.exception.ExceptionWindowController.<init>(ExceptionWindowController.java:107)
   at org.olat.core.gui.exception.MsgFactory.createMessageChiefController(MsgFactory.java:57)
   at org.olat.core.gui.exception.MsgFactory.createMessageChiefController(MsgFactory.java:46)
   at org.olat.core.gui.components.Window.dispatchRequest(Window.java:508)
   at org.olat.core.gui.components.Window.doDispatchRequest(Window.java:226)
   at org.olat.core.gui.components.Component.dispatchRequest(Component.java:192)
   at org.olat.dispatcher.AuthenticatedDispatcher.execute(AuthenticatedDispatcher.java:227)
   at org.olat.core.dispatcher.DispatcherAction.execute(DispatcherAction.java:154)
   at org.olat.core.servlets.OLATServlet.doPost(OLATServlet.java:155)
   at org.olat.core.servlets.OLATServlet.doGet(OLATServlet.java:128)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
>>> stack of 2.cause::java.lang.NullPointerException: null
-> at org.olat.catalog.ui.CatalogEntryAddController.event(CatalogEntryAddController.java:104)
   at org.olat.core.gui.control.DefaultController.dispatchEvent(DefaultController.java:195)
   at org.olat.core.gui.components.Component$1.run(Component.java:238)
   at org.olat.core.logging.activity.ThreadLocalUserActivityLoggerInstaller.runWithUserActivityLogger(ThreadLocalUserActivityLoggerInstaller.java:108)
   at org.olat.core.gui.components.Component.fireEvent(Component.java:236)
   at org.olat.core.gui.components.link.Link.dispatch(Link.java:188)
   at org.olat.core.gui.components.link.Link.doDispatchRequest(Link.java:175)
   at org.olat.core.gui.components.Component.dispatchRequest(Component.java:192)
   at org.olat.core.gui.components.Window.doDispatchToComponent(Window.java:1137)
   at org.olat.core.gui.components.Window.dispatchRequest(Window.java:335)
   at org.olat.core.gui.components.Window.doDispatchRequest(Window.java:226)