Do you have the necessary lines for babl as described here:
http://orgmode.org/worg/org-contrib/babel/languages.php#configure

<http://orgmode.org/worg/org-contrib/babel/languages.php#configure>Namely:

----

;; active Babel languages(org-babel-do-load-languages
 'org-babel-load-languages
 '((gnuplot . t)
   (ditaa . t)
   ))

----
You don't have to have gnuplot... just put whatever languages you want in
the form "language . t" and you're set.

See if that helps.


John

On Wed, Sep 22, 2010 at 7:06 AM, Juri Artamonov <jartamonov@gmail.com>wrote:

> Hello Guys,
>
> I'm still learning how to correctly configure orgmode. One of the items is
> ditaa usage.
>
> I have the following in my org file.
>
> #+begin_src ditaa :file task_states.png :cmdline -r -s 0.8
>  +--------+       +---------+       +--------+
>      |        |       |         |       |        |
>   +--+  TODO  +------>+  NEXT   +------>+  DONE  |
>   |  | cRED   |       |  cBLU   |       | cGRE   |
>   |  +--+-+---+       +--+---+--+       +--------+
>
> #+end_src
>
> #+results:
> file:task_states.png
>
> init.el
> contains reference to ditaa library.
>
> (setq org-ditaa-jar-path "~/lib/ditaa0_9.jar")
>
> Could you please tell me what else do I need to configure in order to have
> graphics in result of exporting the file into HTML?
>
> Thank you,
>                         Juri.
>
>
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