java.lang.InstantiationException: org.netbeans.core.multiview.ContextAwareDescription
   at java.lang.Class.newInstance(Class.java:364)
   at org.netbeans.modules.editor.mimelookup.impl.FolderPathLookup$InstanceItem.createInstanceFor(FolderPathLookup.java:348)
   at org.netbeans.modules.editor.mimelookup.impl.FolderPathLookup$InstanceItem.getInstance(FolderPathLookup.java:281)
   at org.netbeans.modules.editor.mimelookup.impl.FolderPathLookup$PairItem.getInstance(FolderPathLookup.java:169)
   at org.openide.util.lookup.AbstractLookup$R.allInstances(AbstractLookup.java:1055)
   at org.openide.util.lookup.AbstractLookup$R.allInstances(AbstractLookup.java:1035)
   at org.openide.util.lookup.ProxyLookup$LazyCollection.computeSingleResult(ProxyLookup.java:1281)
   at org.openide.util.lookup.ProxyLookup$LazyCollection.computeDelegate(ProxyLookup.java:1119)
   at org.openide.util.lookup.ProxyLookup$LazyCollection.delegate(ProxyLookup.java:1086)
   at org.openide.util.lookup.ProxyLookup$LazyCollection.delegate(ProxyLookup.java:1069)
   at org.openide.util.lookup.ProxyLookup$LazyCollection.isEmpty(ProxyLookup.java:1159)
   at org.openide.util.lookup.ProxyLookup$LazyCollection.computeDelegate(ProxyLookup.java:1130)
   at org.openide.util.lookup.ProxyLookup$LazyCollection.access$900(ProxyLookup.java:1047)
   at org.openide.util.lookup.ProxyLookup$LazyCollection$1.hasNext(ProxyLookup.java:1247)
   at org.netbeans.core.multiview.MultiViewPeer.setMimeLookup(MultiViewPeer.java:160)
   at org.netbeans.core.multiview.MultiViewCloneableTopComponent.setMimeLookup(MultiViewCloneableTopComponent.java:101)
   at org.netbeans.core.api.multiview.MultiViews.createCloneableMultiView(MultiViews.java:119)
   at org.netbeans.modules.html.HtmlEditorSupport.createPane(HtmlEditorSupport.java:149)
   at org.openide.text.CloneableEditorSupport.createCloneableTopComponent(CloneableEditorSupport.java:1058)
   at org.openide.windows.CloneableOpenSupport.openCloneableTopComponent(CloneableOpenSupport.java:206)
   at org.openide.windows.CloneableOpenSupport$1.run(CloneableOpenSupport.java:107)
   at org.netbeans.modules.openide.util.NbMutexEventProvider$Event.doEvent(NbMutexEventProvider.java:118)
   at org.netbeans.modules.openide.util.NbMutexEventProvider$Event.writeAccess(NbMutexEventProvider.java:83)
   at org.netbeans.modules.openide.util.LazyMutexImplementation.writeAccess(LazyMutexImplementation.java:79)
   at org.openide.util.Mutex.writeAccess(Mutex.java:310)
   at org.openide.windows.CloneableOpenSupport.open(CloneableOpenSupport.java:104)
   at org.openide.text.CloneableEditorSupport.open(CloneableEditorSupport.java:434)
   at org.openide.awt.ActionDefaultPerfomer.actionPerformed(ActionDefaultPerfomer.java:70)
   at org.openide.awt.ContextAction$Performer.actionPerformed(ContextAction.java:226)
   at org.openide.awt.ContextManager.actionPerformed(ContextManager.java:260)
   at org.openide.awt.ContextAction.actionPerformed(ContextAction.java:109)
   at org.openide.util.actions.ActionInvoker$1.run(ActionInvoker.java:93)
   at org.openide.util.actions.ActionInvoker.doPerformAction(ActionInvoker.java:116)
   at org.openide.util.actions.ActionInvoker.invokeAction(ActionInvoker.java:99)
   at org.openide.awt.GeneralAction$BaseDelAction.actionPerformed(GeneralAction.java:234)
   at org.netbeans.modules.project.ui.ProjectUtilities$3.run(ProjectUtilities.java:295)
   at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:312)
   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)