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

The exceptions you reported may be due to a serious RETE corruption... in the first case, it seems that a JoinNode is trying to access a FromNode's memory... in the latter, a constraint's context can not be retrieved correctly. The solution you propose avoids the exception, but is only removing the symptom and no Did you check that the KnowledgeBuilder didn't report any error during the construction phase? Otherwise, I'd need to see the rules or a unit test that reproduces the problem. Thanks Davide -- 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.