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java.lang.NullPointerException: 	at org.hibernate.eclipse.jdt.ui.wizards.ConfigurationActor.getService(ConfigurationActor.java:127)	at org.hibernate.eclipse.jdt.ui.wizards.ConfigurationActor.createConfiguration(ConfigurationActor.java:134)	at org.hibernate.eclipse.jdt.ui.wizards.ConfigurationActor.createConfigurations(ConfigurationActor.java:117)	at org.hibernate.eclipse.jdt.ui.wizards.NewHibernateMappingFileWizard.createConfigurations(NewHibernateMappingFileWizard.java:559)	at org.hibernate.eclipse.jdt.ui.wizards.NewHibernateMappingFileWizard.getPlaces2Gen(NewHibernateMappingFileWizard.java:316)	at org.hibernate.eclipse.jdt.ui.wizards.NewHibernateMappingFileWizard.handlePageChanging(NewHibernateMappingFileWizard.java:172)	at org.eclipse.jface.wizard.WizardDialog$10.run(WizardDialog.java:1554)	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)	at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:50)	at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:173)	at org.eclipse.jface.wizard.WizardDialog.firePageChanging(WizardDialog.java:1551)	at org.eclipse.jface.wizard.WizardDialog.doPageChanging(WizardDialog.java:899)	at org.eclipse.jface.wizard.WizardDialog.showPage(WizardDialog.java:1186)	at org.eclipse.jface.wizard.WizardDialog.nextPressed(WizardDialog.java:885)	at org.eclipse.jface.wizard.WizardDialog.buttonPressed(WizardDialog.java:425)	at org.eclipse.jface.dialogs.Dialog$2.widgetSelected(Dialog.java:619)	at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:248)	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)	at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4481)	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1329)	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3819)	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3430)	at org.eclipse.jface.window.Window.runEventLoop(Window.java:827)	at org.eclipse.jface.window.Window.open(Window.java:803)	at org.eclipse.ui.internal.handlers.WizardHandler$New.executeHandler(WizardHandler.java:269)	at org.eclipse.ui.internal.handlers.WizardHandler.execute(WizardHandler.java:290)	at org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:295)	at org.eclipse.ui.internal.handlers.E4HandlerProxy.execute(E4HandlerProxy.java:90)	at sun.reflect.GeneratedMethodAccessor106.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:497)	at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:56)	at org.eclipse.e4.core.internal.di.InjectorImpl.invokeUsingClass(InjectorImpl.java:252)	at org.eclipse.e4.core.internal.di.InjectorImpl.invoke(InjectorImpl.java:234)	at org.eclipse.e4.core.contexts.ContextInjectionFactory.invoke(ContextInjectionFactory.java:132)	at org.eclipse.e4.core.commands.internal.HandlerServiceHandler.execute(HandlerServiceHandler.java:152)	at org.eclipse.core.commands.Command.executeWithChecks(Command.java:493)	at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:486)	at org.eclipse.e4.core.commands.internal.HandlerServiceImpl.executeHandler(HandlerServiceImpl.java:210)	at org.eclipse.ui.internal.handlers.LegacyHandlerService.executeCommand(LegacyHandlerService.java:343)	at org.eclipse.ui.internal.actions.CommandAction.runWithEvent(CommandAction.java:160)	at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:595)	at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:511)	at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:420)	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)	at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4481)	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1329)	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3819)	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3430)	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:1127)	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1018)	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:156)	at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:694)	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:606)	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:139)	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:380)	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:497)	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:669)	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:608)	at org.eclipse.equinox.launcher.Main.run(Main.java:1515)	at org.eclipse.equinox.launcher.Main.main(Main.java:1488)