The Struts <html:form> tag has had a number of attributes removed in version 1.2.x. The form name, type and scope can no longer be specified on this tag - these are now looked up in the struts-config.xml.
I'm attaching a patch which resolves the above issue. Also I noticed that the JSP example was missing the "languages" field that is on the equivalent velocity page. The patch also includes this field on the JSP pages so that the JSP/velocity pages are directly comparable.