i tried to run \JBossCache-all-2.0.0.ALPHA1\examples\PojoCache\annotated50 using the same configuration and got the following error: ------------------------------------------------------- GMS: address is 192.168.10.222:4578 ------------------------------------------------------- ------------------------------------------------------- GMS: address is 192.168.10.222:4582 ------------------------------------------------------- org.jboss.cache.ReplicationException: java.lang.Exception: Don't know how to marshall object of type class examples.Student at org.jboss.cache.TreeCache.callRemoteMethods(TreeCache.java:2110) at org.jboss.cache.TreeCache.callRemoteMethods(TreeCache.java:2045) at org.jboss.cache.TreeCache.callRemoteMethods(TreeCache.java:2177) at org.jboss.cache.RPCManager.callRemoteMethods(RPCManager.java:65) at org.jboss.cache.interceptors.BaseRpcInterceptor.replicateCall(BaseRpcInterceptor.java:84) at org.jboss.cache.interceptors.BaseRpcInterceptor.replicateCall(BaseRpcInterceptor.java:62) at org.jboss.cache.interceptors.ReplicationInterceptor.handleReplicatedMethod(ReplicationInterceptor.java:114) at org.jboss.cache.interceptors.ReplicationInterceptor.invoke(ReplicationInterceptor.java:86) at org.jboss.cache.interceptors.Interceptor.invoke(Interceptor.java:75) at org.jboss.cache.interceptors.TxInterceptor.handleNonTxMethod(TxInterceptor.java:290) at org.jboss.cache.interceptors.TxInterceptor.invoke(TxInterceptor.java:128) at org.jboss.cache.interceptors.Interceptor.invoke(Interceptor.java:75) at org.jboss.cache.interceptors.CacheMgmtInterceptor.invoke(CacheMgmtInterceptor.java:151) at org.jboss.cache.interceptors.Interceptor.invoke(Interceptor.java:75) at org.jboss.cache.interceptors.InvocationContextInterceptor.invoke(InvocationContextInterceptor.java:61) at org.jboss.cache.TreeCache.invokeMethod(TreeCache.java:3803) at org.jboss.cache.TreeCache.put(TreeCache.java:1556) at org.jboss.cache.TreeCacheProxyImpl.put(TreeCacheProxyImpl.java:226) at org.jboss.cache.pojo.impl.InternalHelper.put(InternalHelper.java:162) at org.jboss.cache.pojo.impl.SerializableObjectHandler.putIntoCache(SerializableObjectHandler.java:76) at org.jboss.cache.pojo.impl.SerializableObjectHandler.put(SerializableObjectHandler.java:60) at org.jboss.cache.pojo.impl.PojoCacheDelegate.putObjectII(PojoCacheDelegate.java:179) at org.jboss.cache.pojo.impl.PojoCacheImpl.putObject(PojoCacheImpl.java:139) at org.jboss.cache.pojo.impl.PojoCacheImpl.org$jboss$cache$pojo$impl$PojoCacheImpl$attach$aop(PojoCacheImpl.java:117) at org.jboss.cache.pojo.impl.PojoCacheImpl$PojoCacheImplAdvisor.attach3085019539260813833(PojoCacheImpl$PojoCacheImplAdvisor.java) at org.jboss.cache.pojo.impl.PojoCacheImpl.attach(PojoCacheImpl.java) at org.jboss.cache.pojo.impl.PojoCacheImpl.attach(PojoCacheImpl.java:109) at test.examples.StudentMaintTest.testPropagation(StudentMaintTest.java:98) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at junit.framework.TestCase.runTest(TestCase.java:154) at junit.framework.TestCase.runBare(TestCase.java:127) at junit.framework.TestResult$1.protect(TestResult.java:106) at junit.framework.TestResult.runProtected(TestResult.java:124) at junit.framework.TestResult.run(TestResult.java:109) at junit.framework.TestCase.run(TestCase.java:118) at junit.framework.TestSuite.runTest(TestSuite.java:208) at junit.framework.TestSuite.run(TestSuite.java:203) at junit.textui.TestRunner.doRun(TestRunner.java:116) at com.intellij.rt.execution.junit.IdeaTestRunner.doRun(IdeaTestRunner.java:69) at junit.textui.TestRunner.doRun(TestRunner.java:109) at com.intellij.rt.execution.junit.IdeaTestRunner.startRunnerWithArgs(IdeaTestRunner.java:24) at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:118) at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:40) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at com.intellij.rt.execution.application.AppMain.main(AppMain.java:90) Caused by: java.lang.Exception: Don't know how to marshall object of type class examples.Student at org.jboss.cache.marshall.TreeCacheMarshaller200.marshallObject(TreeCacheMarshaller200.java:253) at org.jboss.cache.marshall.TreeCacheMarshaller200.marshallMap(TreeCacheMarshaller200.java:328) at org.jboss.cache.marshall.TreeCacheMarshaller200.marshallObject(TreeCacheMarshaller200.java:238) at org.jboss.cache.marshall.TreeCacheMarshaller200.marshallMethodCall(TreeCacheMarshaller200.java:279) at org.jboss.cache.marshall.TreeCacheMarshaller200.marshallObject(TreeCacheMarshaller200.java:182) at org.jboss.cache.marshall.TreeCacheMarshaller200.marshallMethodCall(TreeCacheMarshaller200.java:279) at org.jboss.cache.marshall.TreeCacheMarshaller200.marshallObject(TreeCacheMarshaller200.java:182) at org.jboss.cache.marshall.TreeCacheMarshaller200.objectToStream(TreeCacheMarshaller200.java:82) at org.jboss.cache.marshall.VersionAwareMarshaller.objectToByteBuffer(VersionAwareMarshaller.java:121) at org.jgroups.blocks.RpcDispatcher.callRemoteMethod(RpcDispatcher.java:205) at org.jboss.cache.TreeCache.callRemoteMethods(TreeCache.java:2104) ... 50 more org.jboss.cache.pojo.PojoCacheException: PojoTreeCache: org.jboss.cache.ReplicationException: java.lang.Exception: Don't know how to marshall object of type class examples.Student at org.jboss.cache.pojo.impl.PojoCacheImpl.org$jboss$cache$pojo$impl$PojoCacheImpl$attach$aop(PojoCacheImpl.java:122) at org.jboss.cache.pojo.impl.PojoCacheImpl$PojoCacheImplAdvisor.attach3085019539260813833(PojoCacheImpl$PojoCacheImplAdvisor.java) at org.jboss.cache.pojo.impl.PojoCacheImpl.attach(PojoCacheImpl.java) at org.jboss.cache.pojo.impl.PojoCacheImpl.attach(PojoCacheImpl.java:109) at test.examples.StudentMaintTest.testPropagation(StudentMaintTest.java:98) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:40) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at com.intellij.rt.execution.application.AppMain.main(AppMain.java:90) Process finished with exit code -1 View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3997038#... 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