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java.lang.NullPointerException: 	at org.eclipse.jdt.debug.ui.launchConfigurations.JavaClasspathTab.isDefaultClasspath(JavaClasspathTab.java:348)	at org.eclipse.jdt.debug.ui.launchConfigurations.JavaClasspathTab.performApply(JavaClasspathTab.java:274)	at org.eclipse.debug.ui.AbstractLaunchConfigurationTabGroup.performApply(AbstractLaunchConfigurationTabGroup.java:98)	at org.eclipse.debug.internal.ui.launchConfigurations.LaunchConfigurationTabGroupWrapper.performApply(LaunchConfigurationTabGroupWrapper.java:169)	at org.eclipse.debug.internal.ui.launchConfigurations.LaunchConfigurationTabGroupViewer.handleApplyPressed(LaunchConfigurationTabGroupViewer.java:1356)	at org.eclipse.debug.internal.ui.launchConfigurations.LaunchConfigurationTabGroupViewer$3.widgetSelected(LaunchConfigurationTabGroupViewer.java:348)	at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:227)	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:938)	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3682)	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3293)	at org.eclipse.jface.window.Window.runEventLoop(Window.java:820)	at org.eclipse.jface.window.Window.open(Window.java:796)	at org.eclipse.debug.internal.ui.launchConfigurations.LaunchConfigurationsDialog.open(LaunchConfigurationsDialog.java:1133)	at org.eclipse.debug.internal.ui.launchConfigurations.LaunchConfigurationPropertiesDialog.open(LaunchConfigurationPropertiesDialog.java:230)	at org.eclipse.debug.ui.DebugUITools.openLaunchConfigurationPropertiesDialog(DebugUITools.java:429)	at org.eclipse.debug.ui.DebugUITools.openLaunchConfigurationPropertiesDialog(DebugUITools.java:408)	at org.hibernate.eclipse.console.actions.AddConfigurationAction.doAddConfiguration(AddConfigurationAction.java:71)	at org.hibernate.eclipse.console.actions.AddConfigurationAction.run(AddConfigurationAction.java:55)	at org.eclipse.jface.action.Action.runWithEvent(Action.java:498)	at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:545)	at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:490)	at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:402)	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:938)	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3682)	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3293)	at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2389)	at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2353)	at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2219)	at org.eclipse.ui.internal.Workbench$4.run(Workbench.java:466)	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:289)	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:461)	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:106)	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:153)	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:106)	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:76)	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:363)	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:176)	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:585)	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:504)	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:443)	at org.eclipse.equinox.launcher.Main.run(Main.java:1169)