1. Create a Seam project.
2. Open home.xhtml
3. Select <li> (the whole tag)
4. Right Mouse Click
5. See eclipse log:

java.lang.NullPointerException
at org.jboss.tools.seam.ui.refactoring.SeamRefactorContributionFactory.scanNodeContent(SeamRefactorContributionFactory.java:321)
at org.jboss.tools.seam.ui.refactoring.SeamRefactorContributionFactory.scanChildNodes(SeamRefactorContributionFactory.java:308)
at org.jboss.tools.seam.ui.refactoring.SeamRefactorContributionFactory.scanChildNodes(SeamRefactorContributionFactory.java:312)
at org.jboss.tools.seam.ui.refactoring.SeamRefactorContributionFactory.scanChildNodes(SeamRefactorContributionFactory.java:312)
at org.jboss.tools.seam.ui.refactoring.SeamRefactorContributionFactory.scanChildNodes(SeamRefactorContributionFactory.java:312)
at org.jboss.tools.seam.ui.refactoring.SeamRefactorContributionFactory.scanChildNodes(SeamRefactorContributionFactory.java:312)
at org.jboss.tools.seam.ui.refactoring.SeamRefactorContributionFactory.scanChildNodes(SeamRefactorContributionFactory.java:312)
at org.jboss.tools.seam.ui.refactoring.SeamRefactorContributionFactory.scanChildNodes(SeamRefactorContributionFactory.java:312)
at org.jboss.tools.seam.ui.refactoring.SeamRefactorContributionFactory.scanChildNodes(SeamRefactorContributionFactory.java:312)
at org.jboss.tools.seam.ui.refactoring.SeamRefactorContributionFactory.checkContextVariableInDOM(SeamRefactorContributionFactory.java:284)
at org.jboss.tools.seam.ui.refactoring.SeamRefactorContributionFactory.createContributionItems(SeamRefactorContributionFactory.java:199)
at org.eclipse.ui.internal.menus.ProxyMenuAdditionCacheEntry.createContributionItems(ProxyMenuAdditionCacheEntry.java:60)
at org.eclipse.ui.internal.menus.WorkbenchMenuService$5.run(WorkbenchMenuService.java:561)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.ui.internal.menus.WorkbenchMenuService.processAdditions(WorkbenchMenuService.java:622)
at org.eclipse.ui.internal.menus.WorkbenchMenuService.addContributionsToManager(WorkbenchMenuService.java:683)
at org.eclipse.ui.internal.menus.WorkbenchMenuService.populateContributionManager(WorkbenchMenuService.java:669)
at org.eclipse.ui.internal.menus.SlaveMenuService.populateContributionManager(SlaveMenuService.java:203)
at org.eclipse.ui.internal.menus.SlaveMenuService.populateContributionManager(SlaveMenuService.java:203)
at org.eclipse.ui.internal.menus.SlaveMenuService.populateContributionManager(SlaveMenuService.java:76)
at org.eclipse.ui.internal.PopupMenuExtender.addMenuContributions(PopupMenuExtender.java:357)
at org.eclipse.ui.internal.PopupMenuExtender.menuAboutToShow(PopupMenuExtender.java:335)
at org.eclipse.jface.action.MenuManager.fireAboutToShow(MenuManager.java:338)
at org.eclipse.jface.action.MenuManager.handleAboutToShow(MenuManager.java:469)
at org.eclipse.jface.action.MenuManager.access$1(MenuManager.java:465)
at org.eclipse.jface.action.MenuManager$2.menuShown(MenuManager.java:491)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:235)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1003)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1027)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1008)
at org.eclipse.swt.widgets.Control.WM_INITMENUPOPUP(Control.java:4270)
at org.eclipse.swt.widgets.Control.windowProc(Control.java:3974)
at org.eclipse.swt.widgets.Canvas.windowProc(Canvas.java:342)
at org.eclipse.swt.widgets.Decorations.windowProc(Decorations.java:1578)
at org.eclipse.swt.widgets.Shell.windowProc(Shell.java:2010)
at org.eclipse.swt.widgets.Display.windowProc(Display.java:4589)
at org.eclipse.swt.internal.win32.OS.TrackPopupMenu(Native Method)
at org.eclipse.swt.widgets.Menu._setVisible(Menu.java:254)
at org.eclipse.swt.widgets.Display.runPopups(Display.java:3906)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3467)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2405)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2369)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2221)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:500)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:493)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:113)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:194)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:368)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:559)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:514)
at org.eclipse.equinox.launcher.Main.run(Main.java:1311)
at org.eclipse.equinox.launcher.Main.main(Main.java:1287)