[kde-doc-english] failed to load external entity "dtd/dtd/docbook/docbookx.dtd"

[Bob Lockie]

I created an index.docbook a while ago and I finally got around to 
picking it up again.

# meinproc index.docbook
dtd/kdex.dtd:99: I/O warning : failed to load external entity 
"dtd/dtd/docbook/docbookx.dtd"

I never used to get an error.
Any ideas?