From mboxrd@z Thu Jan  1 00:00:00 1970
From: Nick Dokos <nicholas.dokos@hp.com>
Subject: Re: Blank equation when exported to HTML using dvipng
Date: Mon, 28 May 2012 10:08:20 -0400
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In-Reply-To: Message from Richard Stanton <stanton@haas.berkeley.edu> of "Sun,
	27 May 2012 23:00:17 PDT."
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To: Richard Stanton <stanton@haas.berkeley.edu>
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Richard Stanton <stanton@haas.berkeley.edu> wrote:

> ...
> 
> So now I can see what the problem is, but how do I tell org-mode to
> call latex with the -shell-escape flag?
> 

You can customize org-latex-to-pdf-process (or
org-e-latex-pdf-process[fn:1] if you are using the new exporter). In my
case, I have

,----
| org-latex-to-pdf-process is a variable defined in `org-latex.el'.
| Its value is ("texi2dvi --pdf %f")
| Original value was 
| ("pdflatex -interaction nonstopmode -output-directory %o %f" "pdflatex -interaction nonstopmode -output-directory %o %f" "pdflatex -interaction nonstopmode -output-directory %o %f")
`----

but texi2dvi probably does not exist on windows (and you still have to
patch it even on linux). Just add --shell-escape after every pdflatex
(or whatever command is invoked on windows).

Nick

Footnotes:

[fn:1] NB: different spelling in the two cases - not only the added "e-" but
       also the missing "-to".