XslTransform.Transform(): Different results on different machines?

Hi,

I have an application which works fine on my development machine. However, when I used my build on the production machine, I get an Exception.

I use code like this to transform a XML string "Text" to its transformed version:

XmlDocument oXML = new XmlDocument();
System.IO.StringWriter sw = null;

oXML.LoadXml(Text);
XslTransform xslt = new XslTransform();
sw = new System.IO.StringWriter();
xslt.Load(XSLT);
xslt.Transform(oXML, null, sw);

return sw.ToString();

With the same input string and stylesheet, on my machine, it works fine and on the prodcution machine, it generates an exception.

Here is the part of the xslt file that causes the error:

<xsl:template name="reverse-conso-entry-amounts">
<xsl:param name="entry"/>

<xsl:element name="t:entry">
<xsl:for-each select="$entry/@*">
    <xsl:variable name="att-name" select="name()"/>
    <xsl:variable name="att-value" select="."/>
    <xsl:choose>
      <xsl:when test="($att-name='ConsolidatedAmount'
        or $att-name='BudgetedConsolidatedAmount'
        or $att-name='ActualConsolidatedAmount'
        or $att-name='ForecastedConsolidatedAmount'
        or $att-name='LastForecastedConsolidatedAmount')">
        <xsl:attribute name="{$att-name}">
Problem here=> <xsl:value-of select="-($att-value)"/>
        </xsl:attribute>
      </xsl:when>
      <xsl:otherwise>
        <xsl:attribute name="{$att-name}">
          <xsl:value-of select="$att-value"/>
        </xsl:attribute>
      </xsl:otherwise>
    </xsl:choose>
</xsl:for-each>
    <xsl:for-each select="$entry/t:entry">
<xsl:call-template name="reverse-conso-entry-amounts">
    <xsl:with-param name="entry" select="."/>
</xsl:call-template>
</xsl:for-each>
</xsl:element>

</xsl:template>

Essentially, this reverts some of the attributes the input element.

Commenting the whole "<xsl:choose>" block removes the Exception problem and the Exception says there is a problem at the "<" character.

Any reasons why this would work on my machine and not on the server (different dlls maybe ) Any hints

Any help would be appreciated.

Thanks

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