dockbook.xsl -- can't load when building port

[Gary Aitken]

Trying to rebuild ports after pkg delete -a

Lots of stuff fails with:

compilation error: file /tmp/xmlto-xsl0Tylm9 line 4 element import
xsl:import: unable to load
"http://docbook.sourceforge.net/release/xsl/current/manpages/docbook.xsl"
I/O Error: Attempt to load network entity
"http://docbook.sourceforge.net/release/xsl/current/manpages/docbook.xsl"

I have the following installed at this point:

docbook-1.5
docbook-sgml-4.5_1
docbook-xml-5.0_2
docbook-xsl-1.76.1_2
sdocbook-xml-1.1_1,2

what's the magic I need?
Please reply to this addr as well as list,
as I'm crippled at this point.
9.2-RELEASE, amd64

Thanks,

Gary