RS clicking the thumbnail in "My courses"

2014-10-05 14:20:54,806 [ajp-apr-8005-exec-14] ERROR OLATRuntimeException - OLAT::ERROR ^%^ N5-E39 ^%^ org.olat.core.logging
Mozilla/5.0 (Windows NT 6.3; WOW64; Trident/7.0; rv:11.0) like Gecko ^%^ **RedScreen**
<dispatchinfo>
	<componentinfo>
		<compname>ffo_main_repoentry_table</compname>
		<compclass>org.olat.core.gui.components.form.flexible.impl.FormWrapperContainer</compclass>
		<extendedinfo>n/a</extendedinfo>
		<event>
			<class&gt;org.olat.core.gui.components.form.flexible.impl.FormEvent</class&gt;
			<command>ONCLICK</command> <tostring>com:ONCLICK,org.olat.core.gui.components.form.flexible.impl.FormEvent@dbfa1708</tostring>
		</event>
	</componentinfo>
	<controllerinfo>
		<controllername>org.olat.repository.ui.list.RepositoryEntryListController</controllername>
		<controllername>org.olat.repository.ui.list.OverviewRepositoryListController</controllername>
		<controllername>org.olat.core.commons.fullWebApp.BaseFullWebappController</controllername>
	</controllerinfo>
</dispatchinfo>
>>> stack of 1.cause::org.olat.core.logging.OLATRuntimeException: null
-> at org.olat.core.gui.exception.ExceptionWindowController.<init>(ExceptionWindowController.java:116)
   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:524)
   at org.olat.core.gui.components.Window.doDispatchRequest(Window.java:228)
   at org.olat.core.gui.components.AbstractComponent.dispatchRequest(AbstractComponent.java:192)
   at org.olat.dispatcher.AuthenticatedDispatcher.processValidDispatchURI(AuthenticatedDispatcher.java:241)
   at org.olat.dispatcher.AuthenticatedDispatcher.execute(AuthenticatedDispatcher.java:197)
   at org.olat.core.servlets.OpenOLATServlet.executeUserRequest(OpenOLATServlet.java:269)
   at org.olat.core.servlets.OpenOLATServlet.doGet(OpenOLATServlet.java:198)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
>>> stack of 2.cause::java.lang.NullPointerException: null
-> at org.olat.repository.ui.list.RepositoryEntryListController.event(RepositoryEntryListController.java:358)
   at org.olat.core.gui.control.DefaultController.dispatchEvent(DefaultController.java:197)
   at org.olat.core.gui.components.AbstractComponent$1.run(AbstractComponent.java:238)
   at org.olat.core.logging.activity.ThreadLocalUserActivityLoggerInstaller.runWithUserActivityLogger(ThreadLocalUserActivityLoggerInstaller.java:108)
   at org.olat.core.gui.components.AbstractComponent.fireEvent(AbstractComponent.java:236)
   at org.olat.core.gui.components.form.flexible.impl.FormWrapperContainer.fireFormEvent(FormWrapperContainer.java:148)
   at org.olat.core.gui.components.form.flexible.impl.Form.fireFormEvent(Form.java:802)
   at org.olat.core.gui.components.form.flexible.impl.FormItemImpl.doDispatchFormRequest(FormItemImpl.java:479)
   at org.olat.core.gui.components.form.flexible.impl.Form.evalFormRequest(Form.java:298)
   at org.olat.core.gui.components.form.flexible.impl.FormWrapperContainer.doDispatchRequest(FormWrapperContainer.java:103)
   at org.olat.core.gui.components.AbstractComponent.dispatchRequest(AbstractComponent.java:192)