Une erreur lors de la génération du wsdl sous eclipse

Salut tout le monde

J'ai un problème qui survient lorsque j'essaie de générer le wsdl d'un service sous eclipse.
Voilà l'erreur qui apparait :( (avec les détails):
IWAB0014E Unexpected exception occurred.

java.lang.NullPointerException
at org.eclipse.jst.ws.internal.common.J2EEUtils.addJAROrModuleDependency(J2EEUtils.java:1440)
at org.eclipse.jst.ws.internal.creation.ui.extension.PreServiceDevelopCommand.execute(PreServiceDevelopCommand.java:185)
at org.eclipse.wst.command.internal.env.core.fragment.CommandFragmentEngine.runCommand(CommandFragmentEngine.java:419)
at org.eclipse.wst.command.internal.env.core.fragment.CommandFragmentEngine.visitTop(CommandFragmentEngine.java:359)
at org.eclipse.wst.command.internal.env.core.fragment.CommandFragmentEngine.moveForwardToNextStop(CommandFragmentEngine.java:254)
at org.eclipse.wst.command.internal.env.ui.widgets.SimpleCommandEngineManager$6.run(SimpleCommandEngineManager.java:294)
at org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalContext.java:369)
at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:313)
at org.eclipse.jface.wizard.WizardDialog.run(WizardDialog.java:934)
at org.eclipse.wst.command.internal.env.ui.widgets.SimpleCommandEngineManager.runForwardToNextStop(SimpleCommandEngineManager.java:264)
at org.eclipse.wst.command.internal.env.ui.widgets.WizardPageManager.runForwardToNextStop(WizardPageManager.java:91)
at org.eclipse.wst.command.internal.env.ui.widgets.WizardPageManager.getNextPage(WizardPageManager.java:154)
at org.eclipse.wst.command.internal.env.ui.widgets.SimpleWizardPage.getNextPage(SimpleWizardPage.java:136)
at org.eclipse.jface.wizard.WizardDialog.nextPressed(WizardDialog.java:813)
at org.eclipse.jface.wizard.WizardDialog.buttonPressed(WizardDialog.java:369)
at org.eclipse.jface.dialogs.Dialog$2.widgetSelected(Dialog.java:618)
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.wst.command.internal.env.ui.widgets.popup.DynamicPopupWizard.run(DynamicPopupWizard.java:130)
at org.eclipse.ui.internal.PluginAction.runWithEvent(PluginAction.java:256)
at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:546)
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)

j'ai trouvé dans des forums (même dans des discussions sur developpez) que la raison principale c'est la non configuration du serveur d'application, alors que ce n'est plus mon cas :nono: (j'ai bien configuré Tomcat).

Merci d'avance pour votre aide :roll:.

Cordialement,
:merci: