Hi, I am new to jboss.please help me for the following problem. In my application i have a .ini file where we have some configuration values which must be set at the time of deployment of the build. What i am trying to do is creating a MBEAN through which we can change the values through jmx console. and my application will read all the values from this mbean. i have created one interface and one class which implements the interface. when i try to compile the build it says build suceesful and i also can see the sar file in the server>default>deploy folder. but imedidately after i am getting this exception. 13:05:11,758 ERROR [MainDeployer] could not create deployment: file:/C:/jboss-4.0.1/server/default/deploy/blog_example.sar org.jboss.deployment.DeploymentException: No ClassLoaders found for: blog.example.services.BlogExampleService; - nested throwable: (java.lang.ClassNotFoundException: No ClassLoaders found for: blog.example.services.BlogExampleService) at org.jboss.system.ServiceConfigurator.install(ServiceConfigurator.java:143) at org.jboss.system.ServiceController.install(ServiceController.java:200) at sun.reflect.GeneratedMethodAccessor46.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:324) at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:144) at org.jboss.mx.server.Invocation.dispatch(Invocation.java:80) at org.jboss.mx.server.Invocation.invoke(Invocation.java:72) at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:249) at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:642) at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:177) at $Proxy4.install(Unknown Source) at org.jboss.deployment.SARDeployer.create(SARDeployer.java:208) at org.jboss.deployment.MainDeployer.create(MainDeployer.java:918) at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:774) at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:738) at sun.reflect.GeneratedMethodAccessor47.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:324) at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:144) at org.jboss.mx.server.Invocation.dispatch(Invocation.java:80) at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:122) at org.jboss.mx.server.Invocation.invoke(Invocation.java:74) at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:131) at org.jboss.mx.server.Invocation.invoke(Invocation.java:74) at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:249) at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:642) at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:177) at $Proxy8.deploy(Unknown Source) at org.jboss.deployment.scanner.URLDeploymentScanner.deploy(URLDeploymentScanner.java:305) at org.jboss.deployment.scanner.URLDeploymentScanner.scan(URLDeploymentScanner.java:481) at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.doScan(AbstractDeploymentScanner.java:204) at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.loop(AbstractDeploymentScanner.java:215) at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.run(AbstractDeploymentScanner.java:194) Caused by: java.lang.ClassNotFoundException: No ClassLoaders found for: blog.example.services.BlogExampleService at org.jboss.mx.loading.LoadMgr3.beginLoadTask(LoadMgr3.java:198) at org.jboss.mx.loading.RepositoryClassLoader.loadClassImpl(RepositoryClassLoader.java:464) at org.jboss.mx.loading.RepositoryClassLoader.loadClass(RepositoryClassLoader.java:374) at java.lang.ClassLoader.loadClass(ClassLoader.java:235) at org.jboss.mx.server.MBeanServerImpl.instantiate(MBeanServerImpl.java:1183) at org.jboss.mx.server.MBeanServerImpl.instantiate(MBeanServerImpl.java:269) at org.jboss.mx.server.MBeanServerImpl.createMBean(MBeanServerImpl.java:327) at org.jboss.system.ServiceCreator.install(ServiceCreator.java:125) at org.jboss.system.ServiceConfigurator.internalInstall(ServiceConfigurator.java:153) at org.jboss.system.ServiceConfigurator.install(ServiceConfigurator.java:118) ... 33 more plzzzzz help me what to do now. Thanks in advance!! sam View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3989620#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...