ava.lang.NullPointerException: This exception has no message.

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This exception has no message.
ava.lang.NullPointerException:
at org.eclipse.swt.widgets.TabFolder.gtk_switch_page(TabFolder.java:570)
at org.eclipse.swt.widgets.Widget.windowProc(Widget.java:2009)
at org.eclipse.swt.internal.gtk.OS._gtk_widget_show(Native Method)
at org.eclipse.swt.internal.gtk.OS.gtk_widget_show(OS.java:14774)
at org.eclipse.swt.widgets.TabFolder.createItem(TabFolder.java:311)
at org.eclipse.swt.widgets.TabItem.createWidget(TabItem.java:123)
at org.eclipse.jdt.internal.ui.wizards.buildpaths.BuildPathsBlock.createControl(BuildPathsBlock.java:228)
at org.eclipse.jface.wizard.Wizard.createPageControls(Wizard.java:175)
at org.eclipse.jface.wizard.WizardDialog.createPageControls(WizardDialog.java:705)
at org.eclipse.jface.wizard.WizardDialog.setWizard(WizardDialog.java:1153)
at org.eclipse.jface.wizard.WizardDialog.updateForPage(WizardDialog.java:1211)
at org.eclipse.jface.wizard.WizardDialog.access$4(WizardDialog.java:1208)
at org.eclipse.ui.internal.dialogs.NewWizardSelectionPage.advanceToNextPageOrFinish(NewWizardSelectionPage.java:71)
at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:173)
at org.eclipse.jface.viewers.StructuredViewer.fireDoubleClick(StructuredViewer.java:829)
at org.eclipse.jface.viewers.AbstractTreeViewer.handleDoubleSelect(AbstractTreeViewer.java:1470)
at org.eclipse.jface.viewers.StructuredViewer$4.widgetDefaultSelected(StructuredViewer.java:1263)
at org.eclipse.jface.util.OpenStrategy.fireDefaultSelectionEvent(OpenStrategy.java:252)
at org.eclipse.jface.util.OpenStrategy.access$0(OpenStrategy.java:249)
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.jface.window.Window.runEventLoop(Window.java:827)
at org.eclipse.ui.actions.NewProjectAction.run(NewProjectAction.java:115)
at org.eclipse.jface.action.Action.runWithEvent(Action.java:473)
at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:595)
at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:511)
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.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 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:498)
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)

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