Re: [rules-users] threw error java.lang.ClassCastException: org.drools.reteoo.FromNode$FromMemory cannot be cast to org.drools.reteoo.BetaMemory

In my case, I dynamically add/remove/exec rules at run-time. KnowledgeBase instance is constantly updated. When a rule needs to be added or removed, I do it in temporary KnowledgeBuilder instance. If there are no errors, I update main KnowledgeBase instance using "addKnowledgePackages". I did'nt get any errors ... I do understand that this may be due to KB corruption. I use hasErrors() & getErrors() to check if there are any errors. Do I need to check something else? Regards Ejaz -- View this message in context: http://drools.46999.n3.nabble.com/threw-error-java-lang-ClassCastExceptio... Sent from the Drools: User forum mailing list archive at Nabble.com.