Re: LaTeX export: Unknown LaTeX class `org-article'

[Nick Dokos <ndokos@gmail.com>]

Peter Davis <pfd@pfdstudio.com> writes:

> Eric S Fraga <e.fraga@ucl.ac.uk> writes:
>
>> Peter Davis <pfd@pfdstudio.com> writes:
>>
>> [...]
>>
>>>> > Ok, something weird is going on. This worked on my office MacBook, but
>>>> > when I try on the home one, also with org 8.2.3c,
>>>> > org-export-latex-classes is defined, but org-latex-classes is not.
>>>> >
>>>> > Any clues?
>>>> 
>>>> this sounds like a mixed installation.  do you have an old version of
>>>> org lying around, maybe as part of the emacs installation?  are the two
>>>> systems running different versions of emacs?
>>>> 
>>>
>>> Both running emacs 24.3.1, same build
>>
>> Ummm, strange.  What happens if you 
>>   
>>   C-h v org-export-latex-classes RET
>>
>> e.g.  does it show "is a variable defined in " some file?  If so, where
>> do you end up if you hit RET on that file name?
>
> It does say the variable is define in org-latex.el, and clicking on that
> name takes me to the definition in org-latex.el.gz.
>
> Perhaps that one file is out of sync somehow? Strange.
>

This one file is probably part of the org-mode distributed with your
emacs (that's why it is compressed: the files that you get through git,
or tar or ELPA are uncompressed[fn:1]). You are picking that up before you
pick up the org-latex.el from the 8.2.3c version of org-mode, presumably
because you loaded it early before you changed the value of load-path
to prefer the 8.2.3c version. 

What happens if you set load-path properly at the very beginning of your
.emacs file? See section 1.2 of the org manual.

Footnotes:

[fn:1] I'm sure about git, but it's only my belief in the other two cases
since I have never used either of those methods.

-- 
Nick