I'm new into latex, org and latex in org so it may sounds like a total newbie question... I want to preview latex in emacs with org-preview-latex-fragment, I have followed instructions from here and trying to preview this code :

#+BEGIN_SRC late :tangle /tmp/example.tex

e^{i\pi} = -1

\int_0^\infty e^{-x^2} dx = \frac{\sqrt{\pi}}{2}



but it fails with a blank square. I have checked the log in /tmp and latex has an error but I don't know why :

File: ts1cmr.fd 2014/09/29 v2.5h Standard LaTeX font definitions
LaTeX Font Info:    ... okay on input line 33.

! LaTeX Error: Can be used only in preamble.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.    

l.34 \begin{document}

! Emergency stop.

l.34 \begin{document}

Your command was ignored.
Type  I <command> <return>  to replace it with another command,
or  <return>  to continue without it.

Here is how much of TeX's memory you used:
 3089 strings out of 493055
 35108 string characters out of 6140611
 80703 words of memory out of 5000000
 6607 multiletter control sequences out of 15000+600000
 4509 words of font info for 16 fonts, out of 8000000 for 9000
 1141 hyphenation exceptions out of 8191
 27i,1n,26p,236b,50s stack positions out of                     5000i,500n,10000p,200000b,80000s
No pages of output.

I have tried to compile out of emacs and get the same message, but as it's interactive when I type it works. So why do I get this error and how to make it works within emacs ?

ps: if you need the full log please tell me, it's just that it is huge and doesn't work on my google chrome.

1 Answer 1


Remove the stuff like \documentclass, \begin{document} and \end{document}. This does not belong into an org-document.

Only keep the formulas. The document structure is controlled by org and not by latex.

  • Thank you it was as simple as that. It's a cool feature I love it ! Commented Dec 4, 2015 at 19:14

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