This has turned out to be the same (or very similar) issue as in this other post of mine: http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4095424 I went back to an old 1.3.0.ALPHA version of my application and found that the culprit was one of the following jars: jboss-el.jar jboss-seam-gen.jar (almost definitely not this one) jboss-seam-ioc.jar For that version I just replaced the jars with the ones from the working version. I still can't solve this under Seam 2.0.0.CR2 but does this give an indication of where the problem may lie? Thanks, Damian. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4095426#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...