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

Ok, this is starting to become helpful :) So two questions, just to be sure: 1) Do you modify the KnowledgeBase using the KnowledgeAgent? or do you use the KB methods directly? 2) Whenever you "update" the KB, what do you do exactly? do you remove the previous version of the rule, or do you just add a new package with the "new" one? Knowing the method you use to modify the KB would be extremely helpful And yes, this may indeed be related to what dcrissman reported Thanks! Davide On 05/08/2013 10:11 AM, mohdejaz74 wrote: