Hi everyone, I had an application created on SEAM 1.2 which was fine, but then I needed to use GWT, so I changed to SEAM 2.0. After some hours of fight with the application to make it work on 2.0 and also integrate a simple GWT test class, I find myself having a problem which I just can't figure it out. If the web.xml of the application contains <listener> | <listener-class>org.jboss.seam.servlet.SeamListener</listener-class> | </listener> when I deploy the app I get the following error: 18:21:18,768 ERROR [[/projectmanager]] Exception starting filter Seam Filter | java.lang.ClassCastException: org.jboss.seam.servlet.SeamFilter The stack trace is a bit longer so I didn't include it all. Anyone any ideas why this thing happens? I need to make this work. Thanks a lot for your time. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4123866#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...