Hi Seth,

You are getting transformation, because you are mixing up the XSL
instructions (although the error message seems a bit odd).

> <xsl:stylesheet version="1.0"
> xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

You need to declare the namespace for the rdf prefix in your
<xsl:stylesheet>, too, since you need it in nearly all of your
templates.

> <xsl:template match="rss">
> <rdf:RDF
>   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
>   xmlns="http://purl.org/rss/1.0/">
>
>   <xsl:template match="channel">
>     <channel>
> 	<xsl:attribute name="rdf:about"><xsl:value-of
> select="link"/></xsl:attribute>
> 	<title><xsl:value-of select="title"/></title>
> 	<description><xsl:value-of select="description"/></description>
> 	<image><xsl:attribute name="rdf:resource"><xsl:value-of
> select="image"/></xsl:attribute></image>
>     <items><rdf:Seq>
> 	  <xsl:for-each select="item">
> 	    <rdf:li>
> 		  <xsl:attribute name="rdf:resource"><xsl:value-of
> select="link"/></xsl:attribute>
> 		</rdf:li>
> 	  </xsl:for-each>
> 	</rdf:Seq></items>
>     <textinput><xsl:value-of select="textinput"/></textinput>
>     </channel>
>   </xsl:template>

Templates can't be nested in XSLT. If you want to apply templates for
other nodes in an template, use <xsl:apply-templates> instead.
<xsl:template> must be a child element of <xsl:stylesheet>.

>   <xsl:transform match="channel/image">
>     <image>
>       <xsl:attribute name="rdf:resource"><xsl:value-of
> select="url"/></xsl:attribute>
> 	  <title><xsl:value-of select="image/title"/></title>
> 	  <url><xsl:value-of select="image/url"/></url>
> 	  <link><xsl:value-of select="image/link"/></link>
>     </image>
>   </xsl:transform>

<xsl:transform> is a synonym for <xsl:stylesheet> and therefore
completely wrong here. You need to change this to be an <xsl:template
...> and move it one level up in your hierarchy. You should also include
an <xsl:apply-template> in your stylesheet invoking this template...

>   <xsl:for-each select="channel/item">
>     <item>
> 	  <xsl:attribute name="rdf:about"><xsl:value-of
> select="link"/></xsl:attribute>
> 	  <title><xsl:value-of select="title"/></title>
> 	  <link><xsl:value-of select="link"/></link>
> 	  <description><xsl:value-of
select="description"/></description>
> 	</item>
>   </xsl:for-each>

I think you should better include this part somewhere in your channel
template...

>   <xsl:transform match="channel/textinput">
>     <textinput>
> 	  <xsl:attribute name="rdf:about"><xsl:value-of
> select="url"/></xsl:attribute>
> 	  <title><xsl:value-of select="title"/></title>
> 	  <description><xsl:value-of
select="description"/></description>
> 	  <link><xsl:value-of select="link"/></link>
>     </textinput>
>   </xsl:transform>

This template needs to be under <xsl:stylesheet> as well.

> </rdf:RDF>
> </xsl:template>
>
> </xsl:stylesheet>

If your source document uses a namespace, you need to take that into
account, too.
I didn't have an appropriate RSS 2.0 document at hand, so I can't give
you more detailed information. If you could provide a simple input
document, I can give you an XSLT doing the job.

I hope this helps.

best regards,
Roman