[O] LaTeX export: Unknown LaTeX class `org-article'

[Peter Davis]

I'm trying to get org-article working so I can create PDFs with 
something other than Computer Modern, but I keep getting the error

Unknown LaTeX class `org-article'

when I use this in the file:

#+LaTeX_CLASS: org-article
#+LaTeX_CLASS_OPTIONS: 
[article,letterpaper,times,12pt,listings-bw,microtype]

I've been following the instructions here:

http://orgmode.org/worg/org-contrib/babel/examples/article-class.html

but I haven't found any way past this error.

I also found the variable org-export-latex-packages-alist was not 
defined, so perhaps that's a clue to some other piece I'm missing? I 
added this to get around that:

(unless (boundp 'org-export-latex-packages-alist)
  (setq org-export-latex-packages-alist nil))

Other ideas?

Thanks!
-pd


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Peter Davis
The Tech Curmudgeon
www.techcurmudgeon.com