In web.xml I also have: | <filter> | <filter-name>Seam Filter</filter-name> | <filter-class>org.jboss.seam.web.SeamFilter</filter-class> | </filter> | | <filter-mapping> | <filter-name>Seam Filter</filter-name> | <url-pattern>/*</url-pattern> | </filter-mapping> | When I deploy my app i can read in the log: INFO [Lifecycle] starting up: org.jboss.seam.servlet.exceptionFilter View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4045965#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...