PDF Bookmarks with Arbortext?

Hello,

I'm having problems getting bookmarks to generate on PDFs with 
Arbortext. My customization layer specifically calls the Arbortext 
extensions:

  <xsl:param name="arbortext.extensions">1</xsl:param>

I'm trying to determine if this is a config problem with Arbortext, or 
if there is a bug in the extension of the XSL. Anyone else have luck 
generating PDF via Arbortext using the DocBook XSL? (File... Compose... 
For PDF...)

Thanks and best regards,

-- Scott