Error in logging after upgrading to 7.7.10

When upgraded to hippo 7.7.10 we noticed an error in our log

This seems to come from the change of CMS7-7222

I attached and xml export of the log item which presumably causes it.

2013-08-02 10:50:17,768 ERROR [org.apache.wicket.RequestCycle] (http-nio-vm60as240/10.27.80.41-8180-exec-13) Error attaching this container for rendering: [MarkupContainer [Component id = extension.currentActivity]]
org.apache.wicket.WicketRuntimeException: Error attaching this container for rendering: [MarkupContainer [Component id = extension.currentActivity]]
at org.apache.wicket.MarkupContainer.onBeforeRenderChildren(MarkupContainer.java:1789)
at org.apache.wicket.Component.onBeforeRender(Component.java:4004)
at org.hippoecm.frontend.service.render.AbstractRenderService.onBeforeRender(AbstractRenderService.java:528)
at org.apache.wicket.Component.internalBeforeRender(Component.java:1069)
at org.apache.wicket.Component.beforeRender(Component.java:1103)
at org.apache.wicket.MarkupContainer.onBeforeRenderChildren(MarkupContainer.java:1777)
at org.apache.wicket.Component.onBeforeRender(Component.java:4004)
at org.hippoecm.frontend.service.render.AbstractRenderService.onBeforeRender(AbstractRenderService.java:528)
at org.apache.wicket.Component.internalBeforeRender(Component.java:1069)
at org.apache.wicket.Component.beforeRender(Component.java:1103)
at org.apache.wicket.MarkupContainer.onBeforeRenderChildren(MarkupContainer.java:1777)
at org.apache.wicket.Component.onBeforeRender(Component.java:4004)
at org.apache.wicket.Component.internalBeforeRender(Component.java:1069)
at org.apache.wicket.Component.beforeRender(Component.java:1103)
at org.apache.wicket.MarkupContainer.onBeforeRenderChildren(MarkupContainer.java:1777)
at org.apache.wicket.Component.onBeforeRender(Component.java:4004)
at org.apache.wicket.markup.repeater.AbstractRepeater.onBeforeRender(AbstractRepeater.java:151)
at org.apache.wicket.Component.internalBeforeRender(Component.java:1069)
at org.apache.wicket.Component.beforeRender(Component.java:1103)
at org.apache.wicket.MarkupContainer.onBeforeRenderChildren(MarkupContainer.java:1777)
at org.apache.wicket.Component.onBeforeRender(Component.java:4004)
at org.apache.wicket.Component.internalBeforeRender(Component.java:1069)
at org.apache.wicket.Component.beforeRender(Component.java:1103)
at org.apache.wicket.MarkupContainer.onBeforeRenderChildren(MarkupContainer.java:1777)
at org.apache.wicket.Component.onBeforeRender(Component.java:4004)
at org.hippoecm.frontend.plugins.standards.tabs.TabbedPanel.onBeforeRender(TabbedPanel.java:367)
at org.apache.wicket.Component.internalBeforeRender(Component.java:1069)
at org.apache.wicket.Component.beforeRender(Component.java:1103)
at org.apache.wicket.MarkupContainer.onBeforeRenderChildren(MarkupContainer.java:1777)
at org.apache.wicket.Component.onBeforeRender(Component.java:4004)
at org.hippoecm.frontend.service.render.AbstractRenderService.onBeforeRender(AbstractRenderService.java:528)
at org.apache.wicket.Component.internalBeforeRender(Component.java:1069)
at org.apache.wicket.Component.beforeRender(Component.java:1103)
at org.apache.wicket.MarkupContainer.onBeforeRenderChildren(MarkupContainer.java:1777)
at org.apache.wicket.Component.onBeforeRender(Component.java:4004)
at org.apache.wicket.Page.onBeforeRender(Page.java:1550)
at org.apache.wicket.Component.internalBeforeRender(Component.java:1069)
at org.apache.wicket.Component.beforeRender(Component.java:1103)
at org.apache.wicket.Component.prepareForRender(Component.java:2295)
at org.apache.wicket.Page.prepareForRender(Page.java:1540)
at org.apache.wicket.Component.prepareForRender(Component.java:2332)
at org.apache.wicket.Page.renderPage(Page.java:911)
at org.apache.wicket.request.target.component.BookmarkablePageRequestTarget.respond(BookmarkablePageRequestTarget.java:261)
at org.apache.wicket.request.AbstractRequestCycleProcessor.respond(AbstractRequestCycleProcessor.java:105)
at org.hippoecm.frontend.PluginRequestCycleProcessor.respond(PluginRequestCycleProcessor.java:145)
at org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1260)
at org.apache.wicket.RequestCycle.step(RequestCycle.java:1331)
at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1438)
at org.apache.wicket.RequestCycle.request(RequestCycle.java:546)
at org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:486)
at org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:319)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.hippoecm.frontend.plugins.login.ConcurrentLoginFilter.doFilter(ConcurrentLoginFilter.java:56)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
at com.googlecode.psiprobe.Tomcat70AgentValve.invoke(Tomcat70AgentValve.java:38)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:987)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:539)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1571)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)
at java.lang.Thread.run(Thread.java:662)
Caused by: java.lang.ArrayIndexOutOfBoundsException: 1
at org.hippoecm.frontend.plugins.cms.dashboard.current.CurrentActivityPlugin$CurrentActivityView.populateItem(CurrentActivityPlugin.java:116)
at org.apache.wicket.markup.repeater.RefreshingView$1.newItem(RefreshingView.java:114)
at org.apache.wicket.markup.repeater.DefaultItemReuseStrategy$1.next(DefaultItemReuseStrategy.java:71)
at org.apache.wicket.markup.repeater.DefaultItemReuseStrategy$1.next(DefaultItemReuseStrategy.java:55)
at org.apache.wicket.markup.repeater.RefreshingView.addItems(RefreshingView.java:189)
at org.apache.wicket.markup.repeater.RefreshingView.onPopulate(RefreshingView.java:98)
at org.apache.wicket.markup.repeater.AbstractRepeater.onBeforeRender(AbstractRepeater.java:131)
at org.apache.wicket.Component.internalBeforeRender(Component.java:1069)
at org.apache.wicket.Component.beforeRender(Component.java:1103)
at org.apache.wicket.MarkupContainer.onBeforeRenderChildren(MarkupContainer.java:1777)
... 69 more