Hi all, I tried to deploy Guvnor 5.5 tomcat war file on glassfish 3.1 as stated in http://stackoverflow.com/questions/13684673/drools-guvnor-on-glassfish-error I am able to deploy it, but it could not able to run it (Launch it). Please let me know whether any of you tried to deploy and launch Guvnor 5.5 on Glassfish Sucessfully, if so let me know what needs to be done. P.S I am able to deploy and launch Guvnor 5.4 on Glassfish 3.1. Thanks Saravana