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

Sure I will provide the stack traces ... My immediate concern is how to avoid the corruption - I've synchronized all updates to KB using synchronized(lock) ... where lock is final Object(). In this particular instance the number of rules are very less - maybe just 20+ I've noticed that when I don't add/remove rules ... ie. use Drools in read only mode; it works great! Should I avoid updates completely? Or should I batch the updates? Right now the only solution I have is to bounce the application when I hit this exception ... that's very helpful to explain to business. 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.