t5: no root element has been defined

Fri, 05 Oct 2007 02:03:29 -0700 

Am I really this dense?   I just can't get this to work.

Simple hello world Start.tml
Start.java in package described in web.xml

Using Tapestry 5.0.5

Try my local:8080/Start and get this

java.lang.IllegalStateException 
No root element has been defined.
As a matter of fact, any Tapestry page, same error.
========================================================
web.xml settings
        <context-param>
                <param-name>tapestry.app-package</param-name>
                <param-value>me.test.web.tapestry</param-value>
        </context-param>

        <filter>
                <filter-name>app</filter-name>
        
<filter-class>org.apache.tapestry.TapestryFilter</filter-class>
        </filter>

        <filter-mapping>
                <filter-name>app</filter-name>
                <url-pattern>/*</url-pattern>
        </filter-mapping>
==========================================================
Start.tml in webapp (web root)
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd";>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
Hello world.  Start.
</body>
</html>
=======================================================
Start.java
package me.test.web.tapestry.pages;
public class Start {
        public Start ()
        {
                
        }
}
======================================================

What can that error mean? 
java.lang.IllegalStateException 
No root element has been defined.?

Thanks 
Bob Heck

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