I did try with a different application, and still the same problem. Does anyone knows how to solve it ? 16:33:42,275 INFO [TomcatDeployment] deploy, ctxPath=/jersey 16:34:23,128 INFO [PackagesResourceConfig] Scanning for root resource and provider classes in the packages: com.bitkickers 16:34:23,141 WARNING [AnnotatedClassScanner] URL, vfszip:/C:/jboss-5.1.0.GA/server/default/deploy/jersey.war/WEB-INF/lib/jersey.jar/com/bitk ickers/, is ignored, it not a file or a jar file URL 16:34:23,983 SEVERE [WebApplicationImpl] The ResourceConfig instance does not contain any root resource classes. 16:34:23,984 ERROR [[/jersey]] StandardWrapper.Throwable com.sun.jersey.api.container.ContainerException: The ResourceConfig instance does not contain any root resource classes. at com.sun.jersey.server.impl.application.WebApplicationImpl.processRootResources(WebApplicationImpl.java:607) at com.sun.jersey.server.impl.application.WebApplicationImpl.initiate(WebApplicationImpl.java:480) at ... Thanks, Bruno View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4251587#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...