Hey Kip,

···<date: 2012-08-02, Thursday>···<from: Kip Warner>···

> On Wed, 2012-08-01 at 09:21 +0200, Philipp Gesang wrote:
> > you can include XMP files with one line:
> > 
> >     \setupbackend[xmpfile=metadata.xmp]
> 
> Hey Philipp. I just tried this using an incorrect filename to the
> xmpfile parameter and my document still compiled without error, so I'm
> wondering if this setup actually does anything at all or if its simply
> ignored?

in my case it does as I can see the XMP information embedded in
the PDF. Watch out for a blob that looks like this:

  >>
  stream
  <?xpacket begin="" id="vkuuxfithomqjnyxqsdpagdu"?><x:xmpmeta xmlns:x="adobe:ns:meta/"><rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#">
  ...

This should contain your metadata if used correctly, else some
generic stuff. Context is just habitually a bit terse wrt error
messages.

Hth
Philipp