Thanks for your quick response Romain! Well, it's really weird because
I just downloaded http://mirror.csclub.uwaterloo.ca/apache/openejb/openejb-4.0.0/apache-tomee-1.0.0-plus.tar.gz Apache TomEE Plus 1.0. I git clone https://github.com/tikalk/jee6-pet-catalog-sample pet-catalog project . I "mvn clean package'. (I just changed the version of the maven-war-plugin to 2.2) I renamed the war to "ROOT.war". I deleted the default ROOT folder in the webapp folder. I copied past my ROOT.war. I ./bin/catalina.sh start. And finally, localhost:8080 and I still got this error. Did I do something wrong? Did you do the same? Please, let me know. Thank you, Jeremy -- View this message in context: http://openejb.979440.n4.nabble.com/Deploying-Pet-catalog-tp4655421p4655424.html Sent from the OpenEJB User mailing list archive at Nabble.com.