You downloaded no dependency plugin so you got NPE because of library dependency of the plugin.You have to manually put all the libraries that ide requires into the lib folder of the plugin. Another solution is that you go downloaded page and download standalone version with dependency. IDE supports two use cases: 1- Viewing of the remote cache in the JBoss AS via jndi name 2- Managing cache configuration file via creating local cache instance in IDE . If you want to view your local cache(not in JBoss AS) in IDE, you have to create new local cache instance in IDE with same group that you wish to inspect. I will update IDE according to the final version of the JBoss Cache soon... View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4055460#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...