Hi, I'm using Drools 4.0.4 and get the following error when trying to convert from .drl to .pkg file. Exception in thread "main" java.lang.VerifyError: (class: org/drools/rule/builder/PatternBuilder, method: buildConstraint signature: (Lorg/drools/rule/builder/RuleBuildContext;Lorg/drools/rule/Pattern;Ljava/lang/Object;Lorg/drools/rule/AbstractCompositeConstraint;)V) Incompatible argument to function I was wondering if someone got this message. This used to work. I inherited the code from someone and I think there might be a classpath problem or something. Thanks. -- View this message in context: http://www.nabble.com/Error-when-trying-to-create-new-PackageBuilder-tp20... Sent from the drools - user mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users