Ok, now there is no exception (using only the Seam SFSB, not the manage bean anymore), but the dataTable does not render on the screen. Using the <s:debug> tag, I see the following in the component tree: | <HtmlDataTable border="-2147483648" first="0" id="_id22" rendered="true" rowIndex="-1" rows="0" transient="false" var="myItem" binding="#{userRoleSearch.dynamicDataTable}"/> View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4089830#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...