java.lang.NullPointerException
   at org.netbeans.modules.maven.groovy.extender.MavenGroovyExtender.isActive(MavenGroovyExtender.java:98)
   at org.netbeans.modules.groovy.refactoring.utils.GroovyProjectUtil.isInGroovyProject(GroovyProjectUtil.java:203)
   at org.netbeans.modules.groovy.refactoring.GroovyRefactoringFactory.createInstance(GroovyRefactoringFactory.java:91)
   at org.netbeans.modules.refactoring.api.AbstractRefactoring.getPlugins(AbstractRefactoring.java:145)
   at org.netbeans.modules.refactoring.api.AbstractRefactoring.addProgressListener(AbstractRefactoring.java:299)
   at org.netbeans.modules.refactoring.spi.impl.ParametersPanel.showDialog(ParametersPanel.java:588)
   at org.netbeans.modules.refactoring.spi.impl.RefactoringPanel.refresh(RefactoringPanel.java:678)
   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.refactoring.java.ui.ContextAnalyzer$NodeToFileObjectTask.run(ContextAnalyzer.java:615)
   at org.netbeans.api.java.source.ui.ScanDialog.runWhenScanFinished(ScanDialog.java:153)
   at org.netbeans.modules.refactoring.java.ui.RefactoringActionsProvider.doRename(RefactoringActionsProvider.java:81)
   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.performAction(RefactoringGlobalAction.java:140)
   at org.openide.util.actions.NodeAction.performAction(NodeAction.java:295)
   at org.openide.util.actions.CallableSystemAction$1.run(CallableSystemAction.java:129)
   at org.openide.util.actions.ActionInvoker$1.run(ActionInvoker.java:95)
   at org.openide.util.actions.ActionInvoker.doPerformAction(ActionInvoker.java:116)
   at org.openide.util.actions.ActionInvoker.invokeAction(ActionInvoker.java:99)
   at org.openide.util.actions.CallableSystemAction.actionPerformed(CallableSystemAction.java:126)
   at org.openide.util.actions.NodeAction.actionPerformed(NodeAction.java:283)
   at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)
   at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)
   at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
   at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
   at javax.swing.AbstractButton.doClick(AbstractButton.java:376)
   at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:833)
   at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:877)
   at java.awt.Component.processMouseEvent(Component.java:6505)
   at javax.swing.JComponent.processMouseEvent(JComponent.java:3321)
   at java.awt.Component.processEvent(Component.java:6270)
   at java.awt.Container.processEvent(Container.java:2229)
   at java.awt.Component.dispatchEventImpl(Component.java:4861)
   at java.awt.Container.dispatchEventImpl(Container.java:2287)
   at java.awt.Component.dispatchEvent(Component.java:4687)
   at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4832)
   at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:4492)
   at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:4422)
   at java.awt.Container.dispatchEventImpl(Container.java:2273)
   at java.awt.Window.dispatchEventImpl(Window.java:2719)
   at java.awt.Component.dispatchEvent(Component.java:4687)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:723)
   at java.awt.EventQueue.access$200(EventQueue.java:103)
   at java.awt.EventQueue$3.run(EventQueue.java:682)
   at java.awt.EventQueue$3.run(EventQueue.java:680)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
   at java.awt.EventQueue$4.run(EventQueue.java:696)
   at java.awt.EventQueue$4.run(EventQueue.java:694)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:693)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:158)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:244)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:163)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:147)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:139)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:97)