I upgraded Tomahawk, and My Faces from My Faces 1.1.3, and Tomahawk 1.1.2 1.1.4/1.1.3. After upgrade t:div refuse to work. It is generate error. Exception below... javax.servlet.ServletException: component must be of type 'Div' javax.faces.webapp.FacesServlet.service(FacesServlet.java:152) org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFil ter.java:144) org.securityfilter.filter.SecurityFilter.doFilter(SecurityFilter.java:18 8) Original JSF page invoke exception <t:div styleClass="noprint"> <jsp:include page="/include/pageFooter.jsp" flush="true"/> </t:div> If I change t:div on dif tag, it is work perfectly. <div class="noprint"> <jsp:include page="/include/pageFooter.jsp" flush="true"/> <div> // CSS CONTENT @media print {.noprint{display:none;} @media print {.print { visibility:visible;width:100%; width: auto; margin: 0 5%; padding: 0; border: 0; float: none !important; color: black; background: transparent none; }}