From mboxrd@z Thu Jan  1 00:00:00 1970
From: RC <recif@yahoo.com>
Subject: Latex export to documentclass beamer
Date: Sun, 9 Aug 2009 13:05:25 +0000 (UTC)
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To: emacs-orgmode@gnu.org

Hi,
 Following an earlier suggestion on the list:
http://thread.gmane.org/gmane.emacs.orgmode/15010/focus=15077

I added the following to my .emacs file:

(add-to-list 'org-export-latex-classes
             '("beamer"
	       "\\documentclass[11pt]{beamer}
                \\usepackage[utf8]{inputenc}
                \\usepackage[T1]{fontenc}
                \\usepackage{amsmath,amssymb,graphicx,bm,multirow,colortbl,vector}
                \\usepackage{hyperref}
                \\usepackage{verbatim}
                \\setbeameroption{show notes}
                \\usetheme{Goettingen}
                \\useoutertheme{infolines}"
	       ("\\begin{frame}\\frametitle{%s}\\begin{itemize}"
"\\end{itemize}\\end{frame}"
		"\\begin{frame}\\frametitle{%s}\\begin{itemize}" "\\end{itemize}\\end{frame}")
	       ("\\item{%s}" . "\\item*{%s}")))

However, this gives me the error:
Debugger entered--Lisp error: (void-variable org-export-latex-classes)

I am using Emacs 23.1 and org-mode 6.29trans in Windows Vista.

Any suggestions to fix the error are appreciated.
RC