T5 application wide message catalog

[jason lea]

I'm using Tapestry 5.0.4 and have some localized fields getting messages
from message catalog for the page working correctly, but I cannot get an
application wide message catalog to work

In the page Target.html:
         <input type="submit" t:type="Any" value="message:button.next"/>

(have also tried <input type="submit" t:type="Any" value="message:
button.next"/> )

In web.xml:
         <filter>
             <filter-name>app</filter-name>
             <filter-class>org.apache.tapestry.TapestryFilter
</filter-class>
         </filter>

So from what I have read about the global message catalog coming from the
name of the filter, I should put a file here
WEB-INF/app.properties:
         button.next=Next

But this gives me the message on my button:  [[missing key: button.next]]
I have put button.next into Target.properties and it found it.
Target.properties was sitting in the same folder as Target.java.

So have I called it the wrong name or put it in the wrong place?

Thanks for any help,

--
Jason Lea