One thing that I found was that you have to have a seam.properties file in your EJB jar file. For this example (the registration example) it will just be an empty file. If you don't put the seam.properties file in place, you will get those conversion errors. If turn on debugging and look in the console you will see that seam cannot find the user component. That is because it was never instantiated and bound into SEAM. And thus, it cannot be resolved when it is looked up. I don't fully understand why you have to have a seam.properties file when it is empty, but I'm sure there is a logical reason. :) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3957106#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...