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java.lang.NullPointerException: 	at org.hibernate.eclipse.mapper.model.DOMReverseEngineeringDefinition.(DOMReverseEngineeringDefinition.java:74)	at org.hibernate.eclipse.mapper.editors.ReverseEngineeringEditor.initSourcePage(ReverseEngineeringEditor.java:112)	at org.hibernate.eclipse.mapper.editors.ReverseEngineeringEditor.addPages(ReverseEngineeringEditor.java:60)	at org.eclipse.ui.forms.editor.FormEditor.createPages(FormEditor.java:133)	at org.eclipse.ui.part.MultiPageEditorPart.createPartControl(MultiPageEditorPart.java:241)	at org.eclipse.ui.internal.EditorReference.createPartHelper(EditorReference.java:609)	at org.eclipse.ui.internal.EditorReference.createPart(EditorReference.java:384)	at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:552)	at org.eclipse.ui.internal.PartPane.setVisible(PartPane.java:283)	at org.eclipse.ui.internal.presentations.PresentablePart.setVisible(PresentablePart.java:126)	at org.eclipse.ui.internal.presentations.util.PresentablePartFolder.select(PresentablePartFolder.java:268)	at org.eclipse.ui.internal.presentations.util.LeftToRightTabOrder.select(LeftToRightTabOrder.java:65)	at org.eclipse.ui.internal.presentations.util.TabbedStackPresentation.selectPart(TabbedStackPresentation.java:391)	at org.eclipse.ui.internal.PartStack.refreshPresentationSelection(PartStack.java:1102)	at org.eclipse.ui.internal.PartStack.setSelection(PartStack.java:1051)	at org.eclipse.ui.internal.PartStack.showPart(PartStack.java:1256)	at org.eclipse.ui.internal.PartStack.add(PartStack.java:442)	at org.eclipse.ui.internal.EditorStack.add(EditorStack.java:109)	at org.eclipse.ui.internal.EditorSashContainer.addEditor(EditorSashContainer.java:60)	at org.eclipse.ui.internal.EditorAreaHelper.addToLayout(EditorAreaHelper.java:212)	at org.eclipse.ui.internal.EditorAreaHelper.addEditor(EditorAreaHelper.java:202)	at org.eclipse.ui.internal.EditorManager.createEditorTab(EditorManager.java:758)	at org.eclipse.ui.internal.EditorManager.openEditorFromDescriptor(EditorManager.java:665)	at org.eclipse.ui.internal.EditorManager.openEditor(EditorManager.java:628)	at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched(WorkbenchPage.java:2360)	at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:2295)	at org.eclipse.ui.internal.WorkbenchPage.access$9(WorkbenchPage.java:2287)	at org.eclipse.ui.internal.WorkbenchPage$9.run(WorkbenchPage.java:2273)	at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:69)	at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2268)	at org.eclipse.ui.actions.OpenWithMenu.openEditor(OpenWithMenu.java:279)	at org.eclipse.ui.actions.OpenWithMenu.access$0(OpenWithMenu.java:271)	at org.eclipse.ui.actions.OpenWithMenu$2.handleEvent(OpenWithMenu.java:178)	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:843)	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3080)	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2713)	at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1699)	at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1663)	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:367)	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:143)	at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:103)	at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:226)	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:376)	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:163)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)	at java.lang.reflect.Method.invoke(Unknown Source)	at org.eclipse.core.launcher.Main.invokeFramework(Main.java:334)	at org.eclipse.core.launcher.Main.basicRun(Main.java:278)	at org.eclipse.core.launcher.Main.run(Main.java:973)	at org.eclipse.core.launcher.Main.main(Main.java:948)