[Sab] exclude-result-prefixes error

[Ronald Hayden]

I'm new to the list, and working on getting Sablotron up and running on 
Darwin for the Darwin Documentation Project.  The test.pl script checks 
out, but when I try to run a DocBook document through using Norm Walsh's 
XSL stylesheets, I get this error:

Error [code:196] [URI:arg:/_stylesheet] [line:2] [node:element 
'<xsl:stylesheet>']
   unexpected attribute 'exclude-result-prefixes'

Any hints?

  -- Ron Hayden