IndexOutOfBoundsException when clicking on sitemap item in HST config editor

Run GoGreen Enterprise.
Go to Channel Manager.
Open English Website.
Edit Channel.
Click on chain link icon to go to HST config editor.
Click on Sitemap Item.

[INFO] [talledLocalContainer] 22.04.2015 17:44:37 ERROR [org.apache.wicket.DefaultExceptionMapper.mapUnexpectedExceptions():170] Unexpected error occurred
[INFO] [talledLocalContainer] org.apache.wicket.WicketRuntimeException: Exception in rendering component: [HtmlHeaderContainer [Component id = _header_188]]
[INFO] [talledLocalContainer] at org.apache.wicket.Component.internalRenderComponent(Component.java:2560)
[INFO] [talledLocalContainer] at org.apache.wicket.MarkupContainer.onRender(MarkupContainer.java:1496)
[INFO] [talledLocalContainer] at org.apache.wicket.Component.internalRender(Component.java:2366)
[INFO] [talledLocalContainer] at org.apache.wicket.Component.render(Component.java:2294)
[INFO] [talledLocalContainer] at org.apache.wicket.MarkupContainer.renderNext(MarkupContainer.java:1392)
[INFO] [talledLocalContainer] at org.apache.wicket.MarkupContainer.renderAll(MarkupContainer.java:1557)
[INFO] [talledLocalContainer] at org.apache.wicket.Page.onRender(Page.java:887)
[INFO] [talledLocalContainer] at org.apache.wicket.markup.html.WebPage.onRender(WebPage.java:142)
[INFO] [talledLocalContainer] at org.apache.wicket.Component.internalRender(Component.java:2366)
[INFO] [talledLocalContainer] at org.apache.wicket.Component.render(Component.java:2294)
[INFO] [talledLocalContainer] at org.apache.wicket.Page.renderPage(Page.java:1024)
[INFO] [talledLocalContainer] at org.apache.wicket.request.handler.render.WebPageRenderer.renderPage(WebPageRenderer.java:139)
[INFO] [talledLocalContainer] at org.hippoecm.frontend.Main$7$1.renderPage(Main.java:453)
[INFO] [talledLocalContainer] at org.apache.wicket.request.handler.render.WebPageRenderer.respond(WebPageRenderer.java:229)
[INFO] [talledLocalContainer] at org.apache.wicket.core.request.handler.RenderPageRequestHandler.respond(RenderPageRequestHandler.java:175)
[INFO] [talledLocalContainer] at org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:890)
[INFO] [talledLocalContainer] at org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:64)
[INFO] [talledLocalContainer] at org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:261)
[INFO] [talledLocalContainer] at org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:218)
[INFO] [talledLocalContainer] at org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:289)
[INFO] [talledLocalContainer] at org.apache.wicket.protocol.http.WicketFilter.processRequestCycle(WicketFilter.java:259)
[INFO] [talledLocalContainer] at org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:201)
[INFO] [talledLocalContainer] at org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:282)
[INFO] [talledLocalContainer] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
[INFO] [talledLocalContainer] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
[INFO] [talledLocalContainer] at org.hippoecm.frontend.plugins.login.ConcurrentLoginFilter.doFilter(ConcurrentLoginFilter.java:54)
[INFO] [talledLocalContainer] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
[INFO] [talledLocalContainer] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
[INFO] [talledLocalContainer] at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
[INFO] [talledLocalContainer] at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
[INFO] [talledLocalContainer] at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
[INFO] [talledLocalContainer] at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
[INFO] [talledLocalContainer] at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
[INFO] [talledLocalContainer] at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610)
[INFO] [talledLocalContainer] at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
[INFO] [talledLocalContainer] at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518)
[INFO] [talledLocalContainer] at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091)
[INFO] [talledLocalContainer] at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:668)
[INFO] [talledLocalContainer] at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:223)
[INFO] [talledLocalContainer] at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1517)
[INFO] [talledLocalContainer] at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1474)
[INFO] [talledLocalContainer] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
[INFO] [talledLocalContainer] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
[INFO] [talledLocalContainer] at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
[INFO] [talledLocalContainer] at java.lang.Thread.run(Thread.java:745)
[INFO] [talledLocalContainer] Caused by: java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
[INFO] [talledLocalContainer] at java.util.ArrayList.rangeCheck(ArrayList.java:653)
[INFO] [talledLocalContainer] at java.util.ArrayList.get(ArrayList.java:429)
[INFO] [talledLocalContainer] at org.hippoecm.hst.plugins.frontend.editor.description.DescriptionPicker.isCurrentSelected(DescriptionPicker.java:277)
[INFO] [talledLocalContainer] at org.hippoecm.hst.plugins.frontend.editor.description.DescriptionPicker.access$300(DescriptionPicker.java:51)
[INFO] [talledLocalContainer] at org.hippoecm.hst.plugins.frontend.editor.description.DescriptionPicker$5.isEnabled(DescriptionPicker.java:180)
[INFO] [talledLocalContainer] at org.apache.wicket.Component.isEnabledInHierarchy(Component.java:4373)
[INFO] [talledLocalContainer] at org.apache.wicket.ajax.AjaxEventBehavior.renderHead(AjaxEventBehavior.java:88)
[INFO] [talledLocalContainer] at org.apache.wicket.Component.renderHead(Component.java:2698)
[INFO] [talledLocalContainer] at org.apache.wicket.markup.renderStrategy.ChildFirstHeaderRenderStrategy$1.component(ChildFirstHeaderRenderStrategy.java:85)
[INFO] [talledLocalContainer] at org.apache.wicket.markup.renderStrategy.DeepChildFirstVisitor.visit(DeepChildFirstVisitor.java:96)
[INFO] [talledLocalContainer] at org.apache.wicket.markup.renderStrategy.DeepChildFirstVisitor.visit(DeepChildFirstVisitor.java:87)
[INFO] [talledLocalContainer] at org.apache.wicket.markup.renderStrategy.DeepChildFirstVisitor.visit(DeepChildFirstVisitor.java:87)
[INFO] [talledLocalContainer] at org.apache.wicket.markup.renderStrategy.DeepChildFirstVisitor.visit(DeepChildFirstVisitor.java:87)
[INFO] [talledLocalContainer] at org.apache.wicket.markup.renderStrategy.DeepChildFirstVisitor.visit(DeepChildFirstVisitor.java:87)
[INFO] [talledLocalContainer] at org.apache.wicket.markup.renderStrategy.DeepChildFirstVisitor.visit(DeepChildFirstVisitor.java:87)
[INFO] [talledLocalContainer] at org.apache.wicket.markup.renderStrategy.DeepChildFirstVisitor.visit(DeepChildFirstVisitor.java:87)
[INFO] [talledLocalContainer] at org.apache.wicket.markup.renderStrategy.DeepChildFirstVisitor.visit(DeepChildFirstVisitor.java:87)
[INFO] [talledLocalContainer] at org.apache.wicket.markup.renderStrategy.DeepChildFirstVisitor.visit(DeepChildFirstVisitor.java:87)
[INFO] [talledLocalContainer] at org.apache.wicket.markup.renderStrategy.DeepChildFirstVisitor.visit(DeepChildFirstVisitor.java:87)
[INFO] [talledLocalContainer] at org.apache.wicket.markup.renderStrategy.DeepChildFirstVisitor.visit(DeepChildFirstVisitor.java:87)
[INFO] [talledLocalContainer] at org.apache.wicket.markup.renderStrategy.DeepChildFirstVisitor.visit(DeepChildFirstVisitor.java:87)
[INFO] [talledLocalContainer] at org.apache.wicket.markup.renderStrategy.DeepChildFirstVisitor.visit(DeepChildFirstVisitor.java:87)
[INFO] [talledLocalContainer] at org.apache.wicket.markup.renderStrategy.DeepChildFirstVisitor.visit(DeepChildFirstVisitor.java:87)
[INFO] [talledLocalContainer] at org.apache.wicket.markup.renderStrategy.DeepChildFirstVisitor.visit(DeepChildFirstVisitor.java:87)
[INFO] [talledLocalContainer] at org.apache.wicket.markup.renderStrategy.DeepChildFirstVisitor.visit(DeepChildFirstVisitor.java:87)
[INFO] [talledLocalContainer] at org.apache.wicket.markup.renderStrategy.DeepChildFirstVisitor.visit(DeepChildFirstVisitor.java:87)
[INFO] [talledLocalContainer] at org.apache.wicket.markup.renderStrategy.DeepChildFirstVisitor.visit(DeepChildFirstVisitor.java:87)
[INFO] [talledLocalContainer] at org.apache.wicket.markup.renderStrategy.DeepChildFirstVisitor.visit(DeepChildFirstVisitor.java:51)
[INFO] [talledLocalContainer] at org.apache.wicket.markup.renderStrategy.ChildFirstHeaderRenderStrategy.renderChildHeaders(ChildFirstHeaderRenderStrategy.java:78)
[INFO] [talledLocalContainer] at org.apache.wicket.markup.renderStrategy.ChildFirstHeaderRenderStrategy.renderHeader(ChildFirstHeaderRenderStrategy.java:57)
[INFO] [talledLocalContainer] at org.apache.wicket.markup.html.internal.HtmlHeaderContainer.onComponentTagBody(HtmlHeaderContainer.java:170)
[INFO] [talledLocalContainer] at org.apache.wicket.markup.html.panel.DefaultMarkupSourcingStrategy.onComponentTagBody(DefaultMarkupSourcingStrategy.java:71)
[INFO] [talledLocalContainer] at org.apache.wicket.Component.internalRenderComponent(Component.java:2536)
[INFO] [talledLocalContainer] ... 44 more