latex export on mac os x with xelatex

[Christian Wittern <cwittern@gmail.com>]

Dear Orgmode users,

I am trying to get Latex export working on a Mac OS X system.  I have
installed MacTex with the whole texlive tree.  I added the path to these
binaries to exec-path like so:

(if (eq window-system 'mac)
    (add-to-list 'exec-path "/usr/local/texlive/2009/bin/universal-darwin")
)

and can confirm that it is indeed picked up and existing in the exec-path.

However, org-export-as-pdf does not manage to produce a pdf.

Next I customized the variable to include the path so that I have

"/usr/local/texlive/2009/bin/universal-darwin/xelatex -interaction
nonstopmode %s" (on one line) as the value of org-latex-to-pdf-process.

Now the xelatex command runs, but the next step fails, since xelatex can not
convert its intermediate file to a pdf, so I get as the first line in the
buffer *Org PDF Latex Output* :

sh: xdvipdfmx: command not found

But now I have no idea where to go to tell orgmode how to find the command
-- someting seems to be seriously wrong (or I am misunderstanding how stuff
is supposed to work) so any help would be appreciated.

All the best,

Christian