[news.eclipse.webtools] Exeptions when exporting war file

[stephane.cauvi@xxxxxxxxxxx (Stephane Cauvi)]

I am using eclipse 3.1.2+ wtp 1.0.2.

When I try to export a simple web project to a war file I get:

java.lang.reflect.InvocationTargetException
	at 
org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalContext.java:357)
	at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:291)
	at org.eclipse.jface.wizard.WizardDialog.run(WizardDialog.java:830)
	at 
org.eclipse.wst.common.frameworks.internal.datamodel.ui.DataModelWizard.runOperations(DataModelWizard.java:204)
	at 
org.eclipse.wst.common.frameworks.internal.datamodel.ui.DataModelWizard.performFinish(DataModelWizard.java:173)
	at 
org.eclipse.jface.wizard.WizardDialog.finishPressed(WizardDialog.java:676)
	at 
org.eclipse.jface.wizard.WizardDialog.buttonPressed(WizardDialog.java:349)
	at org.eclipse.jface.dialogs.Dialog$2.widgetSelected(Dialog.java:556)
	at 
org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:90)
	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:3125)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2758)
	at org.eclipse.jface.window.Window.runEventLoop(Window.java:809)
	at org.eclipse.jface.window.Window.open(Window.java:787)
	at 
org.eclipse.ui.actions.ExportResourcesAction.run(ExportResourcesAction.java:180)
	at 
org.eclipse.ui.actions.BaseSelectionListenerAction.runWithEvent(BaseSelectionListenerAction.java:167)
	at 
org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:538)
	at 
org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:488)
	at 
org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:400)
	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:3125)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2758)
	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)
Caused by: java.lang.NullPointerException


What could I do?

Stephane