[rules-users] Is Drools 5.1 backward compatible with 5.0.1?

Hi, I am new to Drools and learning it by reading "Drools JBoss Rules 5.0 Developer's Guide" at the moment. However, the test cases of chapter 3 was failed when execute with Drools 5.1.0.CR1. I suspect the test is broken due to the sequential option enabled with code block below: KnowledgeBaseConfiguration configuration = KnowledgeBaseFactory.newKnowledgeBaseConfiguration(); configuration.setOption(SequentialOption.YES); You can view the complete code at http://code.google.com/p/droolsbook/source/browse/trunk/droolsBookParent/... Is this code block compatible with Drools 5.1? As it is working without any problem in 5.0.1. If it is incompatible, I would like to know how to migrate it to Drools 5.1.0. Please advice. Thanks, Chee Kin