Bonjour
j'essaie d'installer silverpeas mais j'ai chaque fois cette erreur
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5 mai 2011 17:22:00 com.izforge.izpack.installer.container.provider.GUIInstallDataProvider loadLookAndFeel
INFO: Using laf org.pushingpixels.substance.api.skin.SubstanceMistSilverLookAndFeel
5 mai 2011 17:22:01 com.izforge.izpack.installer.container.provider.GUIInstallDataProvider checkSubstanceLafLoaded
INFO: PanelUI : org.pushingpixels.substance.internal.ui.SubstancePanelUI
5 mai 2011 17:22:01 com.izforge.izpack.installer.container.provider.GUIInstallDataProvider checkSubstanceLafLoaded
INFO: ClassLoader : null
5 mai 2011 17:22:01 com.izforge.izpack.installer.container.provider.GUIInstallDataProvider checkSubstanceLafLoaded
INFO: Cached class : null
5 mai 2011 17:22:01 com.izforge.izpack.installer.container.provider.GUIInstallDataProvider checkSubstanceLafLoaded
INFO: Using system loader to load org.pushingpixels.substance.internal.ui.SubstancePanelUI
5 mai 2011 17:22:01 com.izforge.izpack.installer.container.provider.GUIInstallDataProvider checkSubstanceLafLoaded
INFO: Done loading
5 mai 2011 17:22:01 com.izforge.izpack.installer.container.provider.GUIInstallDataProvider checkSubstanceLafLoaded
INFO: Loaded class : org.pushingpixels.substance.internal.ui.SubstancePanelUI
Exception in thread "AWT-EventQueue-0" com.izforge.izpack.api.exception.IzPackException: com.izforge.izpack.api.exceptio
n.MergeException: Could not find class HelloPanel : Current classpath is
        at com.izforge.izpack.installer.bootstrap.InstallerGui$1.run(InstallerGui.java:57)
        at java.awt.event.InvocationEvent.dispatch(Unknown Source)
        at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
        at java.awt.EventQueue.access$000(Unknown Source)
        at java.awt.EventQueue$1.run(Unknown Source)
        at java.awt.EventQueue$1.run(Unknown Source)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source)
        at java.awt.EventQueue.dispatchEvent(Unknown Source)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
        at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
        at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
        at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
        at java.awt.EventDispatchThread.run(Unknown Source)
Caused by: com.izforge.izpack.api.exception.MergeException: Could not find class HelloPanel : Current classpath is
        at com.izforge.izpack.merge.resolve.ClassPathCrawler.searchClassInClassPath(ClassPathCrawler.java:125)
        at com.izforge.izpack.installer.manager.PanelManager.loadPanelsInContainer(PanelManager.java:71)
        at com.izforge.izpack.installer.base.InstallerController.preloadInstaller(InstallerController.java:30)
        at com.izforge.izpack.installer.bootstrap.InstallerGui$1.run(InstallerGui.java:50)
        ... 14 more
j'ai l'impression qu'il y a une classe qui manque. comment puis je resoudre ce probleme?