I am getting NPE while trying to invoke Rename refactoring on package nodes in 
Projects window.

java.lang.NullPointerException
	at org.netbeans.modules.refactoring.java.RetoucheUtils.isJavaFile
(RetoucheUtils.java:135)
	at 
org.netbeans.modules.refactoring.java.plugins.JavaRefactoringsFactory.createIns
tance(JavaRefactoringsFactory.java:49)
	at org.netbeans.modules.refactoring.api.AbstractRefactoring.getPlugins
(AbstractRefactoring.java:105)
	at 
org.netbeans.modules.refactoring.api.AbstractRefactoring.addProgressListener
(AbstractRefactoring.java:230)
	at org.netbeans.modules.refactoring.spi.impl.ParametersPanel.showDialog
(ParametersPanel.java:422)
	at org.netbeans.modules.refactoring.spi.impl.RefactoringPanel.refresh
(RefactoringPanel.java:582)
	at org.netbeans.modules.refactoring.spi.impl.RefactoringPanel.<init>
(RefactoringPanel.java:113)
	at org.netbeans.modules.refactoring.spi.impl.RefactoringPanel.<init>
(RefactoringPanel.java:105)
	at org.netbeans.modules.refactoring.spi.ui.UI.openRefactoringUI
(UI.java:48)
	at 
org.netbeans.modules.refactoring.java.ui.RefactoringActionsProvider$NodeToFileO
bject.run(RefactoringActionsProvider.java:535)
	at 
org.netbeans.modules.refactoring.java.ui.RefactoringActionsProvider.doRename
(RefactoringActionsProvider.java:96)
	at 
org.netbeans.modules.refactoring.api.impl.ActionsImplementationFactory.doRename
(ActionsImplementationFactory.java:47)
	at org.netbeans.modules.refactoring.spi.impl.RenameAction.performAction
(RenameAction.java:40)
	at 
org.netbeans.modules.refactoring.spi.impl.RefactoringGlobalAction.performAction
(RefactoringGlobalAction.java:111)
	at org.openide.util.actions.NodeAction.performAction
(NodeAction.java:267)
	at org.openide.util.actions.CallableSystemAction$1.run
(CallableSystemAction.java:96)
	at org.netbeans.modules.openide.util.ActionsBridge.doPerformAction
(ActionsBridge.java:55)
	at org.openide.util.actions.CallableSystemAction.actionPerformed
(CallableSystemAction.java:92)
	at org.openide.util.actions.NodeAction.actionPerformed
(NodeAction.java:255)
	at javax.swing.AbstractButton.fireActionPerformed
(AbstractButton.java:1849)
	at javax.swing.AbstractButton$Handler.actionPerformed
(AbstractButton.java:2169)
	at javax.swing.DefaultButtonModel.fireActionPerformed
(DefaultButtonModel.java:420)
	at javax.swing.DefaultButtonModel.setPressed
(DefaultButtonModel.java:258)
	at javax.swing.AbstractButton.doClick(AbstractButton.java:302)
	at javax.swing.plaf.basic.BasicMenuItemUI.doClick
(BasicMenuItemUI.java:1000)
	at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased
(BasicMenuItemUI.java:1041)
	at java.awt.Component.processMouseEvent(Component.java:5501)
	at javax.swing.JComponent.processMouseEvent(JComponent.java:3135)
	at java.awt.Component.processEvent(Component.java:5266)
	at java.awt.Container.processEvent(Container.java:1966)
	at java.awt.Component.dispatchEventImpl(Component.java:3968)
	at java.awt.Container.dispatchEventImpl(Container.java:2024)
	at java.awt.Component.dispatchEvent(Component.java:3803)
	at java.awt.LightweightDispatcher.retargetMouseEvent
(Container.java:4212)
	at java.awt.LightweightDispatcher.processMouseEvent
(Container.java:3892)
	at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3822)
	at java.awt.Container.dispatchEventImpl(Container.java:2010)
	at java.awt.Window.dispatchEventImpl(Window.java:1778)
	at java.awt.Component.dispatchEvent(Component.java:3803)
[catch] at java.awt.EventQueue.dispatchEvent(EventQueue.java:463)
	at java.awt.EventDispatchThread.pumpOneEventForHierarchy
(EventDispatchThread.java:242)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy
(EventDispatchThread.java:163)
	at java.awt.EventDispatchThread.pumpEvents
(EventDispatchThread.java:157)
	at java.awt.EventDispatchThread.pumpEvents
(EventDispatchThread.java:149)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)