I just realized that we have a bug in tapestry_5_1_0.xsd. The schema defines the <t:replacement> element which is wrong as the template parser is looking for <t:replace>.
It also makes sense to remove <t:parameter> element from the schema, as it has been deprecated in Tapestry 5.1 in favour of parameter namespace. So, I would like to introduce tapestry_5_3_0.xsd. Any objections? -- Best regards, Igor Drobiazko http://tapestry5.de
