using document() to access a dynamically generated xml

I would like to use the document() function to access an XML file
dynamically generated by Filemaker Pro. ie

<xsl:variable name="reports"
select="document('http://localhost:591/FMPro?-DB=Reports.FP5&-format=-dso_xm
l&Client=WMC&-Find')"/>
<xsl:for-each select="$reports/fm:FMPDSORESULT/fm:ROW">
<xsl:value-of select="fm:Client"/>
<xsl:value-of select="fm:Authors"/>
<br/>
</xsl:for-each>

Is there a way of doing this? I am using the MSXML3 parser and get the
following error message:

"msxml3.dll (0x80004005)
The stylesheet does not contain a document element. The stylesheet may be
empty, or it may not be a well-formed XML document."



Markus


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