java.lang.NullPointerException: The file parameter cannot be null
        at org.openide.util.Parameters.notNull(Parameters.java:86)
        at org.openide.filesystems.FileUtil.toFileObject(FileUtil.java:862)
        at org.netbeans.modules.j2ee.websphere6.config.WSModuleConfiguration.writefile(WSModuleConfiguration.java:95)
        at org.netbeans.modules.j2ee.websphere6.config.WSWarModuleConfiguration.getWSWebBnd(WSWarModuleConfiguration.java:175)
        at org.netbeans.modules.j2ee.websphere6.config.WSWarModuleConfiguration.<init>(WSWarModuleConfiguration.java:108)
        at org.netbeans.modules.j2ee.websphere6.config.WSModuleConfigurationFactory.create(WSModuleConfigurationFactory.java:58)
        at org.netbeans.modules.j2ee.deployment.config.ConfigSupportImpl.getModuleConfiguration(ConfigSupportImpl.java:716)
        at org.netbeans.modules.j2ee.deployment.config.ConfigSupportImpl.ensureConfigurationReady(ConfigSupportImpl.java:225)
        at org.netbeans.modules.j2ee.deployment.devmodules.spi.J2eeModuleProvider.fireServerChange(J2eeModuleProvider.java:787)
        at org.netbeans.modules.web.project.ProjectWebModule.propertyChange(ProjectWebModule.java:552)
        at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:339)
        at org.netbeans.spi.project.support.ant.PropertyUtils$SequentialPropertyEvaluator.stateChanged(PropertyUtils.java:878)
        at org.openide.util.WeakListenerImpl$Change.stateChanged(WeakListenerImpl.java:321)
        at org.openide.util.ChangeSupport.fireChange(ChangeSupport.java:130)
        at org.openide.util.ChangeSupport.fireChange(ChangeSupport.java:116)
        at org.netbeans.modules.project.ant.ProjectLibraryProvider$1PP$1.run(ProjectLibraryProvider.java:900)
        at org.netbeans.modules.project.ant.ProjectLibraryProvider$1PP$1.run(ProjectLibraryProvider.java:898)
        at org.openide.util.Mutex.readAccess(Mutex.java:285)
        at org.netbeans.modules.project.ant.ProjectLibraryProvider$1PP$2.run(ProjectLibraryProvider.java:911)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:602)
        at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1070)