I have got the TagCloud worked in Umb 4.52. I tried to upgrade to 4.91 today, but the TagCloud list doens't work. I always got the error message: Error parsing XSLT file: \xslt\TagCloud.xslt.

My codes are as follows:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE xsl:Stylesheet [<!ENTITY nbsp "&#x00A0;">]>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:msxml="urn:schemas-microsoft-com:xslt"
    xmlns:tagsLib="urn:tagsLib" xmlns:Exslt.ExsltMath="urn:Exslt.ExsltMath" xmlns:Exslt.ExsltStrings = "urn:Exslt.ExsltStrings"
    exclude-result-prefixes="msxml tagsLib Exslt.ExsltMath Exslt.ExsltStrings">

    <xsl:output method="xml" omit-xml-declaration="yes"/>
    <xsl:variable name="HeaderOption" select="/macro/option" />

    <xsl:template match="/">
        <xsl:variable name="TagFactor" select="6 div Exslt.ExsltMath:max(tagsLib:getAllTags()/tags/tag/@nodesTagged)"/>
        <div class="head_title_bg_Text">
            <div class="head_title">
                <div class="RecentListTitleLeft">Tag Cloud</div>
            </div>
        </div>
        <div class="ListContentTag">
            <xsl:for-each select="tagsLib:getAllTags()/tags/tag">
                <xsl:sort order="ascending" select="."/>
                <div>
                    <a class="tag{round($TagFactor * @nodesTagged)}x" href="/{Exslt.ExsltStrings:replace(Exslt.ExsltStrings:lowercase(.),' ','-')}-tags/" rel="nofollow">
                        <xsl:value-of select="."/>
                    </a>
                </div>
            </xsl:for-each>
        </div>
    </xsl:template>
</xsl:stylesheet>

I have tried to remove some code. I just leave the simplied deifination of a variable:

<xsl:variable name="TagFactor" select="tagsLib:getAllTags()"/>

and I removed the xsl:for-each loop so that it would not cause any eror. I still got the error message "Error parsing XSLT file: \xslt\TagCloud.xslt".

Is there any suggestion? Thanks advance.