Sure, but I'll post all the code and the XML file. I hope that it is readable on your e-mail clients.

I don't get a line where the error occurs, sorry.

Get yourself another XSL procesor. (ObComment about
MSXML deleted)
The problem is, as expected, here:

<xsl:attribute name="{$value}"><xsl:value-of select="value" /></xsl:attribute>

You try to create an attribute with the name #334466
(or something) which is not allowed.
Actually, what are you trying to achive? There is
a heck of a lot of code doing somthing or something
else with your parameters.
I believe you want this:
     <xsl:attribute name="{$name}"><xsl:value-of select="value" /></xsl:attribute>
YMMV.