OK, that's working fine now (including the change to get logging working you suggested in the other thread).

I had to make a change to the add_success.html template.

I had
<%include header.html%>
<%ifnot m%>
....
<%Dbsql::HTML::generate_add_success%>
....
<%endif%>
<p>
<%include footer.html%>

I now have

<%include header.html%>
<%ifnot m%>
....
<%Dbsql::HTML::generate_add_success%>
....
<%endif%>
<%if m%>
....
<%Dbsql::HTML::generate_add_success%>
....
<%endif%>
<p>
<%include footer.html%>

Seems to work. Thanks for your help.
Tim Ault
Oxford UK