Hi, I'm trying to use Schematron for additional validation in Web Author. My Schematron uses functions supported only in Saxon-PE/EE, namely file:exists(). This works in a standalone Author, but in a Web Author I'm getting the following error message: Errors were reported during stylesheet compilation Cannot find a 1-argument function named {http://expath.org/ns/file}exists() This suggests that Web Author is using Saxon-HE that is not supporting such extension functions. Could this be changed somewhere in Web Author configuration? Many thanks in advance, Jirka -- ------------------------------------------------------------------ Jirka Kosek e-mail: jirka@kosek.cz http://xmlguru.cz ------------------------------------------------------------------ Professional XML and Web consulting and training services DocBook/DITA customization, custom XSLT/XSL-FO document processing ------------------------------------------------------------------ Bringing you XML Prague conference http://xmlprague.cz ------------------------------------------------------------------