Access Denied Error with IE5

Hi,

I am an XSL beginner.

I have written a stylesheet that imports Norm Walsh's docbook stylesheet
and customizes it slightly (see below). The Saxon processor has no problem
applying my derived style sheet to a docbook instance. Internet Explorer 5
also has no problem applying Walsh's stylesheet to the instance.  However,
if I specify my derived style sheet in the docbook instance, Internet
Explorer reports the following error:

Access Denied. Error occurred during compilation of included or imported
stylesheet 'file:///d:/tpe-dev/tpe/styles/docbook/html/docbook.xsl'. 

What am I doing wrong?

- Paul

My derived stylesheet:

<?xml version='1.0' encoding="utf-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
                xmlns:doc="http://nwalsh.com/xsl/documentation/1.0"
                exclude-result-prefixes="doc"
                version='1.0'>

<xsl:import href="file:///d:/tpe-dev/tpe/styles/docbook/html/docbook.xsl"/>

<xsl:variable name="chapter.autolabel">0</xsl:variable>
<xsl:variable name="generate.division.toc">0</xsl:variable>
<xsl:variable name="generate.component.toc">0</xsl:variable>

</xsl:stylesheet>


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