java.lang.reflect.UndeclaredThrowableException
        at $Proxy24.getAttribute(.java:0)
        at org.netbeans.modules.j2ee.jboss4.nodes.Util.getMBeanParameter(Util.java:204)
        at org.netbeans.modules.j2ee.jboss4.ide.JBStartServer$1.run(JBStartServer.java:235)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:561)
        at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:986)
java.security.PrivilegedActionException: java.lang.ClassNotFoundException: org.jboss.security.plugins.JBossSecurityContext
        at java.security.AccessController.doPrivileged(AccessController.java:0)
        at org.jboss.proxy.SecurityActions$2.createSecurityContext(SecurityActions.java:195)
        at org.jboss.proxy.SecurityInterceptor.createSecurityContext(SecurityInterceptor.java:110)
        at org.jboss.proxy.SecurityInterceptor.invoke(SecurityInterceptor.java:72)
        at org.jboss.proxy.ClientMethodInterceptor.invoke(ClientMethodInterceptor.java:74)
        at org.jboss.proxy.ClientContainer.invoke(ClientContainer.java:101)
        at $Proxy24.getAttribute(.java:0)
        at org.netbeans.modules.j2ee.jboss4.nodes.Util.getMBeanParameter(Util.java:204)
        at org.netbeans.modules.j2ee.jboss4.ide.JBStartServer$1.run(JBStartServer.java:235)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:561)
        at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:986)
java.lang.ClassNotFoundException: org.jboss.security.plugins.JBossSecurityContext
        at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
        at java.security.AccessController.doPrivileged(AccessController.java:0)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:276)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
        at org.netbeans.ProxyClassLoader.loadClass(ProxyClassLoader.java:235)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
        at org.jboss.security.SecurityContextFactory.getContextClass(SecurityContextFactory.java:142)
        at org.jboss.security.SecurityContextFactory.createSecurityContext(SecurityContextFactory.java:68)
        at org.jboss.security.SecurityContextFactory.createSecurityContext(SecurityContextFactory.java:51)
        at org.jboss.security.SecurityContextFactory.createSecurityContext(SecurityContextFactory.java:87)
        at org.jboss.proxy.SecurityActions$2$6.run(SecurityActions.java:199)
        at java.security.AccessController.doPrivileged(AccessController.java:0)
        at org.jboss.proxy.SecurityActions$2.createSecurityContext(SecurityActions.java:195)
        at org.jboss.proxy.SecurityInterceptor.createSecurityContext(SecurityInterceptor.java:110)
        at org.jboss.proxy.SecurityInterceptor.invoke(SecurityInterceptor.java:72)
        at org.jboss.proxy.ClientMethodInterceptor.invoke(ClientMethodInterceptor.java:74)
        at org.jboss.proxy.ClientContainer.invoke(ClientContainer.java:101)
        at $Proxy24.getAttribute(.java:0)
        at org.netbeans.modules.j2ee.jboss4.nodes.Util.getMBeanParameter(Util.java:204)
        at org.netbeans.modules.j2ee.jboss4.ide.JBStartServer$1.run(JBStartServer.java:235)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:561)
        at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:986)