RS in wiki if wiki is deleted, corrupted, null

Technically, the wiki is null. It's almost impossible to produce the RS with delete!

RedScreen on node 8
2013-09-17 08:16:52,224 [ajp-apr-8005-exec-6] ERROR OLATRuntimeException - OLAT::ERROR ^% N5-E11 ^% org.olat.core.logging
Mozilla/5.0 (Windows NT 6.2; WOW64; rv:23.0) Gecko/20100101 Firefox/23.0 ^% *RedScreen* null :::: :::: ^%
>>> 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:621)
>>> stack of 2.cause::java.lang.NullPointerException: null
-> at org.olat.modules.wiki.WikiMainController.<init>(WikiMainController.java:188)
at org.olat.modules.wiki.WikiManager.createWikiMainController(WikiManager.java:129)
at org.olat.course.nodes.wiki.WikiRunController.<init>(WikiRunController.java:122)
at org.olat.course.nodes.WikiCourseNode.createNodeRunConstructionResult(WikiCourseNode.java:130)
at org.olat.course.run.navigation.NavigationHandler.doEvaluateJumpTo(NavigationHandler.java:344)
at org.olat.course.run.navigation.NavigationHandler.evaluateJumpToCourseNode(NavigationHandler.java:125)
at org.olat.course.run.RunMainController.updateTreeAndContent(RunMainController.java:415)
at org.olat.course.run.RunMainController.activate(RunMainController.java:1255)
at org.olat.resource.accesscontrol.ui.RepositoryMainAccessControllerWrapper.activate(RepositoryMainAccessControllerWrapper.java:115)
at org.olat.core.commons.fullWebApp.BaseFullWebappController.back(BaseFullWebappController.java:560)
at org.olat.core.commons.fullWebApp.BaseFullWebappController.event(BaseFullWebappController.java:524)