That works as does the attempt on my home computer. I was at work earlier. I'm truly perplexed as from memory I just cannot think of anything different between the home and work .emacs files that would do this. I want to go back and look at the load languages section from the work one, though, as I got the same error at home prior to adding that section. I'm wondering if I have a typo somewhere (though I did copy and paste what's below so just not sure!).

I'll try again and post back tomorrow. I truly appreciate the help.

John

On Wed, Jul 21, 2010 at 10:22 PM, Eric Schulte <schulte.eric@gmail.com> wrote:
Hi John,

Yes the following should be sufficient

;; setup ditaa
(setq org-ditaa-jar-path "~/.elisp/org.git/contrib/scripts/ditaa.jar")
(org-babel-do-load-languages
 'org-babel-load-languages
 '((ditaa . t)
  (gnuplot . t)))


What happens if you try to evaluate the following in an Org-mode buffer
with C-c C-c?

#+begin_src ditaa :file example.png
 +---------------+
 |               |
 | ditaa example |
 |               |
 +---------------+
#+end_src

Best -- Eric

John Hendy <jw.hendy@gmail.com> writes:

> Thanks Eric... I should have included that my .emacs file has the following
> (which I followed from here:
> http://orgmode.org/Changes.html#ob-configuration-changes):
>
> ;; setup ditaa
> (setq org-ditaa-jar-path "~/.elisp/org.git/contrib/scripts/ditaa.jar")
> (org-babel-do-load-languages
>  'org-babel-load-languages
>  '((ditaa . t)
>    (gnuplot . t)))
> (require 'ob-ditaa)
>
> If I understand correctly, the (ditaa . t) and (require 'ob-ditaa) are
> redundant but since it wasn't working, I tried both. Is this what I need to
> have babel work with ditaa?
>
> Thanks for any input...
> John
>
> On Wed, Jul 21, 2010 at 4:57 PM, Eric Schulte <schulte.eric@gmail.com>wrote:
>
>> Hi John,
>>
>> Yes, (1) below is the preferred format, however the "ditaa" language is
>> not enabled by default.  Please customize the org-babel-load-languages
>> variable to enable support for evaluating ditaa code blocks, and then
>> try the code block syntax mentioned in (1) below again and a ditaa
>> figure should be successfully exported.
>>
>> A benefit of the (1) (aka Babel) method below is that code blocks can be
>> evaluated "live" from inside the Org-mode buffer with C-c C-c.  See
>> Chapter 14 of the manual or the relevant portion of the quick guide
>> http://orgmode.org/guide/Working-With-Source-Code.html for more
>> information on using Babel.
>>
>> Best -- Eric
>>
>> John Hendy <jw.hendy@gmail.com> writes:
>>
>> > Hi,
>> >
>> >
>> > I have been having a difficult time with an export (which includes a
>> ditaa
>> > graphic) to PDF via LaTeX recently and am puzzled by it. Which is the
>> > correct format?
>> >
>> > 1) Supported by:
>> > - http://doc.norang.ca/org-mode.html#playingwithditaa
>> > - http://orgmode.org/Changes.html#ob-configuration-changes (indirectly
>> seems
>> > to indicate this format?)
>> >
>> > #+begin_src ditaa :file file.png :cmdline -r -S -s 2.5
>> > ---
>> > Picture here
>> > ---
>> > #+end_src
>> >
>> >
>> > 2) Supported by:
>> > - http://orgmode.org/worg/org-contrib/org-exp-blocks.php
>> > -
>> >
>> http://emacs-fu.blogspot.com/2009/10/writing-presentations-with-org-mode-and.html
>> >
>> > #+begin_ditaa file.png -r -S -s 2.5
>> > ---
>> > Picture here
>> > ---
>> > #+end_ditaa
>> >
>> > Only #2 is working for me currently, though I suspect that #1 is the
>> 'truer'
>> > form? Not sure what's going on...
>> >
>> >
>> > Thanks,
>> > John
>> >
>> > P.S. Is there a way to enlarge the output? Using the -s option only seems
>> to
>> > make the resolution higher, not change the actual size (inches, pixels,
>> > whatever) in the LaTeX output...
>> > _______________________________________________
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>>