Hello After deploying some Seam applications to JBoss on my local PC, occasionally the following exception is being printed to the console (even when no applications are actually used): | 14:26:04,109 ERROR [STDERR] java.lang.reflect.InvocationTargetException | 14:26:04,109 ERROR [STDERR] at sun.reflect.GeneratedMethodAccessor295.invoke(Unknown Source) | 14:26:04,109 ERROR [STDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) | 14:26:04,109 ERROR [STDERR] at java.lang.reflect.Method.invoke(Method.java:615) | 14:26:04,125 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.writeSlotWithMethod(RegularObjectPersister.java:120) | 14:26:04,140 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.defaultWrite(RegularObjectPersister.java:86) | 14:26:04,140 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.writeData(RegularObjectPersister.java:62) | 14:26:04,140 ERROR [STDERR] at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.describeObject(ObjectDescriptorFactory.java:276) | 14:26:04,140 ERROR [STDERR] at org.jboss.serial.objectmetamodel.DataContainer$DataContainerDirectOutput.writeObject(DataContainer.java:206) | 14:26:04,750 ERROR [STDERR] at org.jboss.serial.persister.ObjectOutputStreamProxy.writeObjectOverride(ObjectOutputStreamProxy.java:60) | 14:26:04,750 ERROR [STDERR] at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:320) | 14:26:04,750 ERROR [STDERR] at java.util.HashMap.writeObject(HashMap.java:1040) | 14:26:04,750 ERROR [STDERR] at sun.reflect.GeneratedMethodAccessor285.invoke(Unknown Source) | 14:26:04,750 ERROR [STDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) | 14:26:04,750 ERROR [STDERR] at java.lang.reflect.Method.invoke(Method.java:615) | 14:26:04,750 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.writeSlotWithMethod(RegularObjectPersister.java:120) | 14:26:04,750 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.defaultWrite(RegularObjectPersister.java:86) | 14:26:04,750 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.writeData(RegularObjectPersister.java:62) | 14:26:04,750 ERROR [STDERR] at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.describeObject(ObjectDescriptorFactory.java:276) | 14:26:04,750 ERROR [STDERR] at org.jboss.serial.objectmetamodel.DataContainer$DataContainerDirectOutput.writeObject(DataContainer.java:206) | 14:26:04,750 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.writeSlotWithFields(RegularObjectPersister.java:182) | 14:26:04,750 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.defaultWrite(RegularObjectPersister.java:90) | 14:26:04,750 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.writeData(RegularObjectPersister.java:62) | 14:26:04,750 ERROR [STDERR] at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.describeObject(ObjectDescriptorFactory.java:276) | 14:26:04,750 ERROR [STDERR] at org.jboss.serial.objectmetamodel.DataContainer$DataContainerDirectOutput.writeObject(DataContainer.java:206) | 14:26:04,750 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.writeSlotWithFields(RegularObjectPersister.java:182) | 14:26:04,750 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.defaultWrite(RegularObjectPersister.java:90) | 14:26:04,750 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.writeData(RegularObjectPersister.java:62) | 14:26:04,750 ERROR [STDERR] at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.describeObject(ObjectDescriptorFactory.java:276) | 14:26:04,750 ERROR [STDERR] at org.jboss.serial.objectmetamodel.DataContainer$DataContainerDirectOutput.writeObject(DataContainer.java:206) | 14:26:04,750 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.writeSlotWithFields(RegularObjectPersister.java:182) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.defaultWrite(RegularObjectPersister.java:90) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.writeData(RegularObjectPersister.java:62) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.describeObject(ObjectDescriptorFactory.java:276) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.objectmetamodel.DataContainer$DataContainerDirectOutput.writeObject(DataContainer.java:206) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.persister.ArrayPersister.saveObjectArray(ArrayPersister.java:110) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.persister.ArrayPersister.writeData(ArrayPersister.java:101) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.describeObject(ObjectDescriptorFactory.java:276) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.objectmetamodel.DataContainer$DataContainerDirectOutput.writeObject(DataContainer.java:206) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.io.JBossObjectOutputStream.writeObjectOverride(JBossObjectOutputStream.java:181) | 14:26:04,765 ERROR [STDERR] at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:320) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.io.MarshalledObject.<init>(MarshalledObject.java:51) | 14:26:04,765 ERROR [STDERR] at org.jboss.ejb3.stateful.StatefulBeanContext.writeExternal(StatefulBeanContext.java:405) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.persister.ExternalizePersister.writeData(ExternalizePersister.java:58) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.describeObject(ObjectDescriptorFactory.java:276) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.objectmetamodel.DataContainer$DataContainerDirectOutput.writeObject(DataContainer.java:206) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.io.JBossObjectOutputStream.writeObjectOverride(JBossObjectOutputStream.java:181) | 14:26:04,765 ERROR [STDERR] at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:320) | 14:26:04,765 ERROR [STDERR] at org.jboss.ejb3.cache.simple.StatefulSessionFilePersistenceManager.passivateSession(StatefulSessionFilePersistenceManager.java:347) | 14:26:04,765 ERROR [STDERR] at org.jboss.ejb3.cache.simple.SimpleStatefulCache.passivate(SimpleStatefulCache.java:196) | 14:26:04,765 ERROR [STDERR] at org.jboss.ejb3.cache.simple.SimpleStatefulCache$SessionTimeoutTask.run(SimpleStatefulCache.java:129) | 14:26:04,765 ERROR [STDERR] Caused by: | 14:26:04,765 ERROR [STDERR] java.io.IOException | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.writeSlotWithMethod(RegularObjectPersister.java:129) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.defaultWrite(RegularObjectPersister.java:86) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.writeData(RegularObjectPersister.java:62) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.describeObject(ObjectDescriptorFactory.java:276) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.objectmetamodel.DataContainer$DataContainerDirectOutput.writeObject(DataContainer.java:206) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.writeSlotWithFields(RegularObjectPersister.java:182) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.defaultWrite(RegularObjectPersister.java:90) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.writeData(RegularObjectPersister.java:62) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.describeObject(ObjectDescriptorFactory.java:276) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.objectmetamodel.DataContainer$DataContainerDirectOutput.writeObject(DataContainer.java:206) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.writeSlotWithFields(RegularObjectPersister.java:182) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.defaultWrite(RegularObjectPersister.java:90) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.writeData(RegularObjectPersister.java:62) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.describeObject(ObjectDescriptorFactory.java:276) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.objectmetamodel.DataContainer$DataContainerDirectOutput.writeObject(DataContainer.java:206) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.writeSlotWithFields(RegularObjectPersister.java:182) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.defaultWrite(RegularObjectPersister.java:90) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.writeData(RegularObjectPersister.java:62) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.describeObject(ObjectDescriptorFactory.java:276) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.objectmetamodel.DataContainer$DataContainerDirectOutput.writeObject(DataContainer.java:206) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.writeSlotWithFields(RegularObjectPersister.java:182) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.defaultWrite(RegularObjectPersister.java:90) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.writeData(RegularObjectPersister.java:62) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.describeObject(ObjectDescriptorFactory.java:276) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.objectmetamodel.DataContainer$DataContainerDirectOutput.writeObject(DataContainer.java:206) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.persister.ArrayPersister.saveObjectArray(ArrayPersister.java:110) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.persister.ArrayPersister.writeData(ArrayPersister.java:101) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.describeObject(ObjectDescriptorFactory.java:276) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.objectmetamodel.DataContainer$DataContainerDirectOutput.writeObject(DataContainer.java:206) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.writeSlotWithFields(RegularObjectPersister.java:182) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.defaultWrite(RegularObjectPersister.java:90) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.writeData(RegularObjectPersister.java:62) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.describeObject(ObjectDescriptorFactory.java:276) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.objectmetamodel.DataContainer$DataContainerDirectOutput.writeObject(DataContainer.java:206) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.writeSlotWithFields(RegularObjectPersister.java:182) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.defaultWrite(RegularObjectPersister.java:90) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.writeData(RegularObjectPersister.java:62) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.describeObject(ObjectDescriptorFactory.java:276) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.objectmetamodel.DataContainer$DataContainerDirectOutput.writeObject(DataContainer.java:206) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.writeSlotWithFields(RegularObjectPersister.java:182) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.defaultWrite(RegularObjectPersister.java:90) | 14:26:04,765 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.writeData(RegularObjectPersister.java:62) | 14:26:04,796 ERROR [STDERR] at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.describeObject(ObjectDescriptorFactory.java:276) | 14:26:04,796 ERROR [STDERR] at org.jboss.serial.objectmetamodel.DataContainer$DataContainerDirectOutput.writeObject(DataContainer.java:206) | 14:26:04,796 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.writeSlotWithFields(RegularObjectPersister.java:182) | 14:26:04,796 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.defaultWrite(RegularObjectPersister.java:90) | 14:26:04,812 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.writeData(RegularObjectPersister.java:62) | 14:26:04,812 ERROR [STDERR] at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.describeObject(ObjectDescriptorFactory.java:276) | 14:26:04,812 ERROR [STDERR] at org.jboss.serial.objectmetamodel.DataContainer$DataContainerDirectOutput.writeObject(DataContainer.java:206) | 14:26:04,812 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.writeSlotWithFields(RegularObjectPersister.java:182) | 14:26:04,828 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.defaultWrite(RegularObjectPersister.java:90) | 14:26:04,828 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.writeData(RegularObjectPersister.java:62) | 14:26:04,828 ERROR [STDERR] at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.describeObject(ObjectDescriptorFactory.java:276) | 14:26:04,828 ERROR [STDERR] at org.jboss.serial.objectmetamodel.DataContainer$DataContainerDirectOutput.writeObject(DataContainer.java:206) | 14:26:04,843 ERROR [STDERR] at org.jboss.serial.persister.ObjectOutputStreamProxy.writeObjectOverride(ObjectOutputStreamProxy.java:60) | 14:26:04,843 ERROR [STDERR] at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:320) | 14:26:04,843 ERROR [STDERR] at java.util.LinkedList.writeObject(LinkedList.java:770) | 14:26:04,843 ERROR [STDERR] ... 50 more | 14:26:04,843 ERROR [STDERR] Caused by: | 14:26:04,859 ERROR [STDERR] java.lang.reflect.InvocationTargetException | 14:26:04,859 ERROR [STDERR] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) | 14:26:04,859 ERROR [STDERR] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64) | 14:26:04,859 ERROR [STDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) | 14:26:04,859 ERROR [STDERR] at java.lang.reflect.Method.invoke(Method.java:615) | 14:26:04,890 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.writeSlotWithMethod(RegularObjectPersister.java:120) | 14:26:04,890 ERROR [STDERR] ... 106 more | 14:26:04,890 ERROR [STDERR] Caused by: | 14:26:04,890 ERROR [STDERR] java.io.IOException | 14:26:04,890 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.writeSlotWithMethod(RegularObjectPersister.java:129) | 14:26:04,906 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.defaultWrite(RegularObjectPersister.java:86) | 14:26:04,906 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.writeData(RegularObjectPersister.java:62) | 14:26:04,906 ERROR [STDERR] at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.describeObject(ObjectDescriptorFactory.java:276) | 14:26:04,906 ERROR [STDERR] at org.jboss.serial.objectmetamodel.DataContainer$DataContainerDirectOutput.writeObject(DataContainer.java:206) | 14:26:04,921 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.writeSlotWithFields(RegularObjectPersister.java:182) | 14:26:04,921 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.defaultWrite(RegularObjectPersister.java:90) | 14:26:04,921 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.writeData(RegularObjectPersister.java:62) | 14:26:04,921 ERROR [STDERR] at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.describeObject(ObjectDescriptorFactory.java:276) | 14:26:04,937 ERROR [STDERR] at org.jboss.serial.objectmetamodel.DataContainer$DataContainerDirectOutput.writeObject(DataContainer.java:206) | 14:26:04,937 ERROR [STDERR] at org.jboss.serial.persister.ObjectOutputStreamProxy.writeObjectOverride(ObjectOutputStreamProxy.java:60) | 14:26:04,937 ERROR [STDERR] at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:320) | 14:26:04,937 ERROR [STDERR] at EDU.oswego.cs.dl.util.concurrent.CopyOnWriteArrayList.writeObject(CopyOnWriteArrayList.java:772) | 14:26:04,937 ERROR [STDERR] ... 111 more | 14:26:04,937 ERROR [STDERR] Caused by: | 14:26:04,937 ERROR [STDERR] java.lang.reflect.InvocationTargetException | 14:26:04,937 ERROR [STDERR] at sun.reflect.GeneratedMethodAccessor284.invoke(Unknown Source) | 14:26:04,937 ERROR [STDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) | 14:26:04,937 ERROR [STDERR] at java.lang.reflect.Method.invoke(Method.java:615) | 14:26:04,937 ERROR [STDERR] at org.jboss.serial.persister.RegularObjectPersister.writeSlotWithMethod(RegularObjectPersister.java:120) | 14:26:04,937 ERROR [STDERR] ... 123 more | 14:26:04,937 ERROR [STDERR] Caused by: | 14:26:04,937 ERROR [STDERR] java.lang.NoClassDefFoundError: org.jbpm.graph.exe.ProcessInstance | 14:26:04,937 ERROR [STDERR] at java.lang.Class.getDeclaredFieldsImpl(Native Method) | 14:26:04,937 ERROR [STDERR] at java.lang.Class.getDeclaredFields(Class.java:505) | 14:26:04,937 ERROR [STDERR] at org.jboss.serial.classmetamodel.ClassMetaDataSlot.exploreFields(ClassMetaDataSlot.java:89) | 14:26:04,937 ERROR [STDERR] at org.jboss.serial.classmetamodel.ClassMetaDataSlot.<init>(ClassMetaDataSlot.java:58) | 14:26:04,937 ERROR [STDERR] at org.jboss.serial.classmetamodel.ClassMetaData.exploreSlots(ClassMetaData.java:411) | 14:26:04,937 ERROR [STDERR] at org.jboss.serial.classmetamodel.ClassMetaData.<init>(ClassMetaData.java:138) | 14:26:04,937 ERROR [STDERR] at org.jboss.serial.classmetamodel.ClassMetamodelFactory.getClassMetaData(ClassMetamodelFactory.java:350) | 14:26:04,937 ERROR [STDERR] at org.jboss.serial.objectmetamodel.ObjectDescriptorFactory.describeObject(ObjectDescriptorFactory.java:168) | 14:26:04,937 ERROR [STDERR] at org.jboss.serial.objectmetamodel.DataContainer$DataContainerDirectOutput.writeObject(DataContainer.java:206) | 14:26:04,937 ERROR [STDERR] at org.jboss.serial.persister.ObjectOutputStreamProxy.writeObjectOverride(ObjectOutputStreamProxy.java:60) | 14:26:04,937 ERROR [STDERR] at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:320) | 14:26:04,937 ERROR [STDERR] at java.util.Hashtable.writeObject(Hashtable.java:793) | 14:26:04,937 ERROR [STDERR] ... 127 more | Looking at root cause, I suppose this is something jbpm-related, but how to catch the reason ? 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