Please direct your e-mails to the list and I will respond if I can. I have used both tomcat 5.5 and tomcat 6 with Drools 4.x (4.04 I think) and it was completely transparent. I haven't published any advice, although I think the docs are a little lacking on decision tables, which is primarily how we're using drools. I simply haven't had time to augment them appropriately. Decision tables error messages also seem a little cryptic and I've mostly found solutions to problems by reading the rule again and guessing about what the problem is. Alas, nothing is perfect, but once you get your decision table set up, drools runs REALLY sweet! Good luck. -----Original Message----- From: skirtane(a)paypal.com [mailto:skirtane@paypal.com] Sent: Friday, April 25, 2008 5:29 PM To: Thomas.Hehl(a)acs-inc.com Subject: Drools Tomcat HI, Have you successfully installed drools with tomcat ? Do you any pointers or instructions published on any website ? What veriosn of tomcat did work for you ? tomcat 5.5 or 6.0 ?