Bonjour tout le monde,

J'ai un petit problème lors de la création d'un projet web dynamique via le menu File > New > Other > Web > Dynamic Web Project, dans lequel je choisis Tomcat -> finish

Et là, j'ai le message :
"Failed while installing Dynamic Web Module 2.4

Reason :
Failed while installing Dynamic Web Module 2.4"
(C'est idem avec module 2.3 et 2.2)

Voici mes logs :

!ENTRY org.eclipse.jst.j2ee 4 0 2011-01-05 11:39:21.211
!MESSAGE
!STACK 0
java.lang.NullPointerException
at org.eclipse.jst.j2ee.internal.deployables.J2EEDeployableFactory.createModuleDelegates(J2EEDeployableFactory.java:82)
at org.eclipse.jst.j2ee.internal.deployables.J2EEDeployableFactory.createModules(J2EEDeployableFactory.java:68)
at org.eclipse.jst.j2ee.internal.deployables.J2EEDeployableFactory.createModules(J2EEDeployableFactory.java:56)
at org.eclipse.wst.server.core.util.ProjectModuleFactoryDelegate.cacheModules(ProjectModuleFactoryDelegate.java:59)
at org.eclipse.wst.server.core.util.ProjectModuleFactoryDelegate.getModules(ProjectModuleFactoryDelegate.java:255)
at org.eclipse.wst.server.core.internal.ModuleFactory.getModules(ModuleFactory.java:131)
at org.eclipse.wst.server.core.ServerUtil.getModules(ServerUtil.java:96)
at org.eclipse.wst.server.core.internal.ResourceManager.publishHandleProjectChange(ResourceManager.java:965)
at org.eclipse.wst.server.core.internal.ResourceManager$ServerResourceChangeListener$1.visit(ResourceManager.java:122)
at org.eclipse.core.internal.events.ResourceDelta.accept(ResourceDelta.java:68)
at org.eclipse.core.internal.events.ResourceDelta.accept(ResourceDelta.java:79)
at org.eclipse.core.internal.events.ResourceDelta.accept(ResourceDelta.java:48)
at org.eclipse.wst.server.core.internal.ResourceManager$ServerResourceChangeListener.resourceChanged(ResourceManager.java:116)
at org.eclipse.core.internal.events.NotificationManager$2.run(NotificationManager.java:288)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
at org.eclipse.core.internal.events.NotificationManager.notify(NotificationManager.java:282)
at org.eclipse.core.internal.events.NotificationManager.broadcastChanges(NotificationManager.java:148)
at org.eclipse.core.internal.resources.Workspace.broadcastBuildEvent(Workspace.java:297)
at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:143)
at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:238)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)

!ENTRY org.eclipse.wst.common.project.facet.core 4 0 2011-01-05 11:43:25.672
!MESSAGE Failed while installing Dynamic Web Module 2.4.
!STACK 0
java.lang.NullPointerException
at org.eclipse.jst.j2ee.web.project.facet.WebFacetInstallDelegate.setContentPropertyIfNeeded(WebFacetInstallDelegate.java:229)
at org.eclipse.jst.j2ee.web.project.facet.WebFacetInstallDelegate.execute(WebFacetInstallDelegate.java:86)
at org.eclipse.wst.common.project.facet.core.internal.FacetedProject.callDelegate(FacetedProject.java:1394)
at org.eclipse.wst.common.project.facet.core.internal.FacetedProject.modifyInternal(FacetedProject.java:401)
at org.eclipse.wst.common.project.facet.core.internal.FacetedProject.mergeChangesInternal(FacetedProject.java:1134)
at org.eclipse.wst.common.project.facet.core.internal.FacetedProject.access$2(FacetedProject.java:1070)
at org.eclipse.wst.common.project.facet.core.internal.FacetedProject$5.run(FacetedProject.java:1052)
at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:1800)
at org.eclipse.wst.common.project.facet.core.internal.FacetedProject.mergeChanges(FacetedProject.java:1062)
at org.eclipse.wst.common.project.facet.core.internal.FacetedProjectWorkingCopy.commitChanges(FacetedProjectWorkingCopy.java:1828)
at org.eclipse.wst.common.project.facet.ui.ModifyFacetedProjectWizard.performFinish(ModifyFacetedProjectWizard.java:388)
at org.eclipse.wst.web.ui.internal.wizards.NewProjectDataModelFacetWizard.performFinish(NewProjectDataModelFacetWizard.java:276)
at org.eclipse.wst.common.project.facet.ui.ModifyFacetedProjectWizard$3.run(ModifyFacetedProjectWizard.java:330)
at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:1800)
at org.eclipse.wst.common.project.facet.ui.ModifyFacetedProjectWizard$4.run(ModifyFacetedProjectWizard.java:344)
at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:121)
Sur internet, je trouve rien de vraiment claire.

Si vous avez des solutions et/ou explications, je suis preneur.

Merci d'avance pour votre aide.