java.lang.IllegalStateException: Trying to use content for org.openide.util.lookup.AbstractLookup@472b48c3 but it is already used for org.openide.util.lookup.AbstractLookup@6ab61eb5
   at org.openide.util.lookup.AbstractLookup$Content.attach(AbstractLookup.java:1252)
   at org.openide.util.lookup.AbstractLookup.<init>(AbstractLookup.java:102)
   at org.netbeans.modules.versioning.ui.history.HistoryComponent.getLookup(HistoryComponent.java:493)
   at org.netbeans.core.multiview.MultiViewPeer.assignLookup(MultiViewPeer.java:242)
   at org.netbeans.core.multiview.MultiViewPeer.assignLookup(MultiViewPeer.java:256)
   at org.netbeans.core.multiview.MultiViewCloneableTopComponent.getLookup(MultiViewCloneableTopComponent.java:118)
   at org.netbeans.modules.openfile.RecentFiles.obtainPath(RecentFiles.java:329)
   at org.netbeans.modules.openfile.RecentFiles.access$500(RecentFiles.java:85)
   at org.netbeans.modules.openfile.RecentFiles$3.run(RecentFiles.java:290)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1432)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2042)
Caused: org.openide.util.RequestProcessor$SlowItem: task failed due to: java.lang.IllegalStateException: Trying to use content for org.openide.util.lookup.AbstractLookup@472b48c3 but it is already used for org.openide.util.lookup.AbstractLookup@6ab61eb5
   at org.openide.util.RequestProcessor.post(RequestProcessor.java:424)
   at org.netbeans.modules.openfile.RecentFiles.removeFile(RecentFiles.java:286)
   at org.netbeans.modules.openfile.RecentFiles.access$1100(RecentFiles.java:85)
   at org.netbeans.modules.openfile.RecentFiles$WindowRegistryL.propertyChange(RecentFiles.java:525)
   at java.beans.PropertyChangeSupport.fire(PropertyChangeSupport.java:335)
   at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:327)
   at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:263)
   at org.netbeans.core.windows.RegistryImpl.doFirePropertyChange(RegistryImpl.java:329)
   at org.netbeans.core.windows.RegistryImpl.topComponentOpened(RegistryImpl.java:187)
   at org.netbeans.core.windows.WindowManagerImpl.notifyRegistryTopComponentOpened(WindowManagerImpl.java:1178)
   at org.netbeans.core.windows.WindowManagerImpl.notifyTopComponentOpened(WindowManagerImpl.java:1146)
   at org.netbeans.core.windows.Central.insertModeOpenedTopComponent(Central.java:841)
   at org.netbeans.core.windows.ModeImpl.addOpenedTopComponent(ModeImpl.java:362)
   at org.netbeans.core.windows.LazyLoader.loadNow(LazyLoader.java:162)
   at org.netbeans.core.windows.LazyLoader.access$400(LazyLoader.java:62)
   at org.netbeans.core.windows.LazyLoader$2.run(LazyLoader.java:129)
   at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:733)
   at java.awt.EventQueue.access$200(EventQueue.java:103)
   at java.awt.EventQueue$3.run(EventQueue.java:694)
   at java.awt.EventQueue$3.run(EventQueue.java:692)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:703)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)