Hi All,
        I ran across an issue while unmarshalling StatefulKnowledgeSession. First I'm marshalling the session using the following code which works fine

Marshaller marshaller = MarshallerFactory
                            .newMarshaller(workingMemory.getKnowledgeBase());
                    File file = new File(
                            "C:\\Users\\Sumatheja\\workingmemory.info");
                    FileOutputStream fos = new FileOutputStream(file);
                    ByteArrayOutputStream baos = new ByteArrayOutputStream();
                    marshaller.marshall(baos, workingMemory);
                    baos.writeTo(fos);
                    baos.close();

When I try to unmarshall the session using

Marshaller marshaller = MarshallerFactory
                        .newMarshaller(workingMemory.getKnowledgeBase());
                    FileInputStream fis = new FileInputStream("C:\\Users\\Sumatheja\\workingmemory.info");
                    workingMemory = marshaller.unmarshall(fis);

I'm getting the Error:

java.lang.AbstractMethodError: org.jbpm.marshalling.impl.ProcessMarshallerImpl.init(Lorg/drools/marshalling/impl/MarshallerReaderContext;)V
    at org.drools.marshalling.impl.PersisterHelper.buildRegistry(PersisterHelper.java:287)
    at org.drools.marshalling.impl.ProtobufInputMarshaller.loadAndParseSession(ProtobufInputMarshaller.java:219)
    at org.drools.marshalling.impl.ProtobufInputMarshaller.readSession(ProtobufInputMarshaller.java:152)
    at org.drools.marshalling.impl.ProtobufMarshaller.unmarshall(ProtobufMarshaller.java:117)
    at org.drools.marshalling.impl.ProtobufMarshaller.unmarshall(ProtobufMarshaller.java:86)
    at mattelli.re.ComplianceEngine.ComplianceRunService(ComplianceEngine.java:271)
    at mattelli.re.ComplianceEngine.main(ComplianceEngine.java:84)

No Idea what I'm missing out... any help will be appreciated... Thanks in advance

--
cheers
Sumatheja Dasararaju