java.lang.NullPointerException
   at org.netbeans.modules.refactoring.spi.impl.ParametersPanel.showDialog(ParametersPanel.java:607)
   at org.netbeans.modules.refactoring.spi.impl.RefactoringPanel.refresh(RefactoringPanel.java:680)
   at org.netbeans.modules.refactoring.spi.impl.RefactoringPanel.<init>(RefactoringPanel.java:168)
   at org.netbeans.modules.refactoring.spi.impl.RefactoringPanel.<init>(RefactoringPanel.java:156)
   at org.netbeans.modules.refactoring.spi.ui.UI.openRefactoringUI(UI.java:75)
   at org.netbeans.modules.web.common.refactoring.FolderActionsImplementationProvider.doRename(FolderActionsImplementationProvider.java:116)
   at org.netbeans.modules.refactoring.api.impl.ActionsImplementationFactory.doRename(ActionsImplementationFactory.java:91)
   at org.netbeans.modules.refactoring.spi.impl.RenameAction.performAction(RenameAction.java:77)
   at org.netbeans.modules.refactoring.spi.impl.RefactoringGlobalAction$ContextAction.actionPerformed(RefactoringGlobalAction.java:197)
   at org.netbeans.modules.refactoring.impl.FolderRenameHandlerImpl$1.run(FolderRenameHandlerImpl.java:81)
   at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:0)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:0)
   at java.awt.EventQueue.access$200(EventQueue.java:0)
   at java.awt.EventQueue$3.run(EventQueue.java:0)
   at java.awt.EventQueue$3.run(EventQueue.java:0)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:0)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:0)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:0)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:0)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:0)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:0)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:0)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:0)