java.lang.NullPointerException
   at org.netbeans.modules.j2ee.jboss4.config.EjbDeploymentConfiguration.getJboss(EjbDeploymentConfiguration.java:194)
   at org.netbeans.modules.j2ee.jboss4.config.EjbDeploymentConfiguration.<init>(EjbDeploymentConfiguration.java:137)
   at org.netbeans.modules.j2ee.jboss4.config.JBModuleConfigurationFactory.create(JBModuleConfigurationFactory.java:92)
   at org.netbeans.modules.j2ee.deployment.config.ConfigSupportImpl$1.run(ConfigSupportImpl.java:802)
   at org.netbeans.modules.j2ee.deployment.config.ConfigSupportImpl$1.run(ConfigSupportImpl.java:784)
   at org.openide.util.Mutex.readAccess(Mutex.java:295)
   at org.netbeans.modules.j2ee.deployment.config.ConfigSupportImpl.getModuleConfiguration(ConfigSupportImpl.java:784)
   at org.netbeans.modules.j2ee.deployment.config.ConfigSupportImpl.ensureConfigurationReady(ConfigSupportImpl.java:242)
   at org.netbeans.modules.maven.j2ee.utils.MavenProjectSupport.setServer(MavenProjectSupport.java:175)
   at org.netbeans.modules.maven.j2ee.utils.MavenProjectSupport.assignServer(MavenProjectSupport.java:159)
   at org.netbeans.modules.maven.j2ee.utils.MavenProjectSupport.changeServer(MavenProjectSupport.java:122)
   at org.netbeans.modules.maven.j2ee.ProjectHookImpl.projectOpened(ProjectHookImpl.java:98)
   at org.netbeans.spi.project.ui.ProjectOpenedHook$1.projectOpened(ProjectOpenedHook.java:85)
   at org.netbeans.modules.project.ui.OpenProjectList.notifyOpened(OpenProjectList.java:1298)
   at org.netbeans.modules.project.ui.OpenProjectList.doOpenProject(OpenProjectList.java:1379)
   at org.netbeans.modules.project.ui.OpenProjectList.open(OpenProjectList.java:823)
   at org.netbeans.modules.project.ui.OpenProjectList$6.run(OpenProjectList.java:675)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1423)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2033)