> from xsl file:
> ...
> <NAME>
> 	<xsl:attribute name="lang"><xsl:value-of
> select="$Lang"/></xsl:attribute>
>       <xsl:value-of select="GROUP_NAME"/>
> </NAME>
> ..

That could be written as
<NAME xsl:lang="{$lang}>
       <xsl:value-of select="GROUP_NAME"/>
</NAME>

There's a chance that might even work as it stands.
If not and you stil get 

> during processing, an error is thrown "Could not resolve namespace
> prefix xml: ..."

then that sounds like a bug in your system

David

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