Thanks for the response. I found that I could just change the eternal reference so that the XML processor will not try and generate an alternate URI. This <!ENTITY % calstblx PUBLIC "" "http://www.docbook.org/xml/4.2/soextblx.dtd" > instead of this <!ENTITY % calstblx PUBLIC &quo...

How can I configure oxygen to validate xml using docbook4.2? I tried changing the Schema URI to ${frameworks}/4.2/dtd/docbookx.dtd via the Options/Preferences/Document Type Association/DocBook 4 entry. This did not work. My dtd has the following <!ENTITY % calstblx PUBLIC "-//OASIS//DTD XML Exc...