Page Number Prefixes trouble

Hello!

I stumbled across Jeff Beal's XSL script over on the DocBook.org site for the customization layer for adding page number prefixes to page numbers within DocBook chapters.  I'm attaching two files.  One is a .txt file which contains the errors I received when I ran the "fop myfile.fo myfile.pdf" script to convert the myfile.fo file generated by the xsltproc command to .pdf.  The second file is the .xsl file I reference in the xsltproc command, which I created based on your script at http://wiki.docbook.org/topic/PageNumberPrefixes.

I would very much appreciate any tips you might be able to offer.

I am using version 1.75.2 of Norman Walsh's templates.

Thanks!
- Adam