java.lang.NullPointerException
        at org.netbeans.modules.j2ee.jboss4.config.EarDeploymentConfiguration.getJbossApp(EarDeploymentConfiguration.java:104)
        at org.netbeans.modules.j2ee.jboss4.config.EarDeploymentConfiguration.<init>(EarDeploymentConfiguration.java:78)
        at org.netbeans.modules.j2ee.jboss4.config.JBModuleConfigurationFactory.create(JBModuleConfigurationFactory.java:68)
        at org.netbeans.modules.j2ee.deployment.config.ConfigSupportImpl.getModuleConfiguration(ConfigSupportImpl.java:717)
        at org.netbeans.modules.j2ee.deployment.config.ConfigSupportImpl.ensureConfigurationReady(ConfigSupportImpl.java:226)
        at org.netbeans.modules.j2ee.deployment.devmodules.spi.J2eeModuleProvider.fireServerChange(J2eeModuleProvider.java:787)
        at org.netbeans.modules.j2ee.earproject.ProjectEar.propertyChange(ProjectEar.java:320)
        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:123)
        at org.openide.util.ChangeSupport.fireChange(ChangeSupport.java:109)
        at org.netbeans.spi.project.support.ant.ProjectProperties$PP$2.run(ProjectProperties.java:333)
        at org.netbeans.spi.project.support.ant.ProjectProperties$PP$2.run(ProjectProperties.java:331)
        at org.openide.util.Mutex.readAccess(Mutex.java:285)
        at org.netbeans.spi.project.support.ant.ProjectProperties$PP$3.run(ProjectProperties.java:347)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:577)
        at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1030)