[rules-users] Designer 2.1 install doubts

Hi, I want to try the new version of Designer. So, I've got the designer-2.1-jboss7.war from people.redhat.com/tsurdilo/designer/master. I've renamed to designer.war and deployed into my jboss AS7 that comes with jbpm-5.2.0.Final-installer-full. JbossAS console at http://localhost:9990/console/App.html#deployment-list shows me that designer is enabled but when I try the url http://localhost:8080/designer/ I got a 404 error. Am I missing something ? Btw, must I have guvnor working just to try designer or can I deploy it in a fresh jboss AS instance ? regards, Cristiano