On Mon, Mar 28, 2011 at 8:05 AM, Eric S Fraga <e.fraga@ucl.ac.uk> wrote:

Chris Beard <wcbeard10@wabash.edu> writes:

> Hello,
> I've tried to modify some default latex export settings based on info from here
> http://www.mail-archive.com/emacs-orgmode@gnu.org/msg07645.html
>
> I basically add to the org-mode-hook to do:
> (setq org-export-latex-classes (cons '("myarticle"
> "% BEGIN My Article Defaults
> \\documentclass[10pt,letterpaper]{article}
>
> \\usepackage[letterpaper,includeheadfoot,top=0.5in,bottom=0.5in,left=0.75in,right=0.75in]{geometry};;
> more settings after this...
> )
> org-export-latex-classes))
>
> This works if I evaluate it after I've been exporting to latex, but I
> get an error whenever I start up emacs:
>
> setq: Symbol's value as variable is void: org-export-latex-classes
>
> I'm guessing there's some org-mode latex-export thing that I need to
> load first, but I'm not very familiar with how to do this. Any advice?
>
> Thank you
> Chris

I have:

--8<---------------cut here---------------start------------->8---
(require 'org-install)
(require 'org-exp)
(require 'org-atom)
(require 'org-exp-bibtex)
(require 'org-latex)
--8<---------------cut here---------------end--------------->8---

before any customisations.

By the way, for the types of customisation you are doing above
(obviously, I don't know what you have omitted), I find it easier to
define an org template that has the appropriate #+LaTeX_CLASS_OPTIONS
and #+LATEX_HEADER lines.
--
: Eric S Fraga (GnuPG: 0xC89193D8FFFCF67D) in Emacs 24.0.50.1
: using Org-mode version 7.5 (release_7.5.115.g00134.dirty)