Can't use xsl:include href="char-map.xslt"

guys i need help i dont know what happened but all of
a sudden i can load may char-map.xslt file into my
main xsl file. it reports can't load file error, i
tried directly writing the char-map into the main xsl
but it returns an 'unknown error' message. i'm using
xmlspy, and it was working perfectly yesterday but all
of a sudden it won't work today.

<xsl:stylesheet version="2.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns:fn="http://www.w3.org/2005/02/xpath-functions"
xmlns:xdt="http://www.w3.org/2005/02/xpath-datatypes">
<xsl:include href="char-map.xslt"/>
<xsl:output method="xml" version="1.0"
encoding="UTF-8" indent="yes"
use-character-maps="charmap"/>
<xsl:output method="html" version="4.0"
encoding="UTF-8" indent="yes" name="table"
use-character-maps="charmap"/>
... various templates

UlyLee

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