db2html problems under RH7.1

[Don Allingham <dallingham users sourceforge net>]

I've been trying to use db2html to preview my document, but it no longer
seems to work under RH7.1. I believe I'm using the most up to date
gnome-doc-tools (2.0). It seemed to work under RH6.2

Any ideas as to what I am doing wrong?


[dona wallace doc]$ db2html gramps.sgml 
output is gramps
Using catalogs: /etc/sgml/sgml-docbook.cat
Using stylesheet: /usr/share/sgml/docbook/utils-0.6/docbook-utils.dsl#html
Working on: /home/dona/Projects/gramps/doc/gramps.sgml
jade:/home/dona/Projects/gramps/doc/gramps.sgml:1:69:W: cannot generate system identifier for public text "-//GNOME//DTD DocBook PNG Variant V1.1//EN"
jade:/home/dona/Projects/gramps/doc/gramps.sgml:3:0:E: reference to entity "ARTICLE" for which no system identifier could be generated
jade:/home/dona/Projects/gramps/doc/gramps.sgml:1:0: entity was defined here
jade:/home/dona/Projects/gramps/doc/gramps.sgml:3:0:E: DTD did not contain element declaration for document type name
jade:/home/dona/Projects/gramps/doc/gramps.sgml:30:12:E: there is no attribute "ID"
jade:/home/dona/Projects/gramps/doc/gramps.sgml:30:19:E: element "ARTICLE" undefined
jade:/home/dona/Projects/gramps/doc/gramps.sgml:32:12:E: element "ARTHEADER" undefined
jade:/home/dona/Projects/gramps/doc/gramps.sgml:33:10:E: element "TITLE" undefined

-- 
Don Allingham
dallingham users sourceforge net

GPG/PGP Public Key at
http://members.home.net/donaldallingham/dallingham.key