From mboxrd@z Thu Jan  1 00:00:00 1970
From: Richard Stanton <stanton@haas.berkeley.edu>
Subject: Question on latex source block
Date: Sat, 8 Sep 2012 22:15:10 -0700
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To: "emacs-orgmode@gnu.org" <emacs-orgmode@gnu.org>

Using Org-mode version 7.9.1 (release_7.9.1-154-g659be3 @ c:/emacs/site-lis=
p/org-mode/lisp/), I created the following LaTeX code block:

#+begin_src latex :file test.png
\frac{1}{2}
#+end_src

When I press C-c C-c to compile the code block, I get the following error d=
ump:

Debugger entered--Lisp error: (void-function org-create-formula-image)
  org-create-formula-image("\\frac{1}{2}" "test.png" (:foreground default :=
background default :scale 1.0 :html-foreground "Black" :html-background "Tr=
ansparent" :html-scale 1.0 :matchers ("begin" "$1" "$" "$$" "\\(" "\\[")) t=
)
  org-babel-execute:latex("\\frac{1}{2}" ((:comments . "") (:shebang . "") =
(:cache . "no") (:padline . "") (:noweb . "no") (:tangle . "no") (:exports =
. "results") (:results . "file replace latex") (:session . "none") (:hlines=
 . "no") (:padnewline . "yes") (:file . "test.png") (:result-type . value) =
(:result-params "file" "replace" "latex") (:rowname-names) (:colname-names)=
))
  org-babel-execute-src-block(nil ("latex" "\\frac{1}{2}" ((:comments . "")=
 (:shebang . "") (:cache . "no") (:padline . "") (:noweb . "no") (:tangle .=
 "no") (:exports . "results") (:results . "file replace latex") (:session .=
 "none") (:hlines . "no") (:padnewline . "yes") (:file . "test.png") (:resu=
lt-type . value) (:result-params "file" "replace" "latex") (:rowname-names)=
 (:colname-names)) "" nil 0))
  org-babel-execute-src-block-maybe()
  org-babel-execute-maybe()
  org-babel-execute-safely-maybe()
  run-hook-with-args-until-success(org-babel-execute-safely-maybe)
  org-ctrl-c-ctrl-c(nil)
  call-interactively(org-ctrl-c-ctrl-c nil nil)

What am I missing here?

Thanks.

Richard Stanton