Hello, if someone knows an upgrade guide for Seam please send me the pointer. Thanks. I evenappreciate a chapter in the doc with upgrade instructions(at least with pointers to resources on the net) My problem: Created an app with seam1.2.0Patch1. Runs fine. Each form is validated correctly (using s:decorate and s:validateall) This app was derived from the seam example hibernate2. So it runs only with the microcontainer in tomcat. Sunday i added an edit form in the style of a seam-gen (from Seam 1.2.1GA) generated app. This form does not work. So i decided to upgrade my application. Putting seam.jar,seam-ui.jar and seam-debug.jar from seam1.2.1GA in the WEB-INF/lib folder of my app expecting it to work. But it won't. So i have realized that the facelets lib has changed. Putting it also in the lib folder my pages are rendered well. So far so good. But now, the validation of a form does not work anymore. The PC is flushed to the database even if there are validation errors. This naturally results in hibernate exceptions:-( A pointer to an migration guide is well appreciated. My solution for now is: take the hibernate2 example from seam1.2.1GA and port my app to it. If this will not run, i will notice this forum. Ciao, Carsten View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4040085#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...