[rules-users] serialize RuleBase... precompiling rules

Folks, Using 4.0.1. Can I serialize RuleBase object in order to load later precompiled rules? So far I was able to do that but when inserting facts into stateful session based on that rulebase exception is thrown: java.lang.NoClassDefFoundError: XXXShadowProxy What is the correct way of precompiling rules? I couldn't find any description of how to do it in documentation... Thanks, -Sergey ********************** ** LEGAL DISCLAIMER ** ********************** This E-mail message and any attachments may contain legally privileged, confidential or proprietary information. If you are not the intended recipient(s), or the employee or agent responsible for delivery of this message to the intended recipient(s), you are hereby notified that any dissemination, distribution or copying of this E-mail message is strictly prohibited. If you have received this message in error, please immediately notify the sender and delete this E-mail message from your computer.