[O] [babel] :file header

[Max Flöttmann]

Hi,
I'm working with org-mode and babel to write annotated R-scripts. I include a 
lot of code blocks that should write their graphics to a file.
I'm usually using the :file argument for that, but on my Mac this doesn't work 
anymore.

A code block like this:
#+begin_src R :file test.pdf :session test
     plot.Data(data)
#+end_src

Should be sent to the session 'test' and should be wrapped in the code to 
produce a pdf. This wrapping does not work.
The result is a link to the file, but the file is not produced. The session 
does not show the wrapper code either.

I'm using Aquamacs 2.2 and Org-mode version 7.6 (release_7.6.1.gc51d).
Does anybody know a fix for this?
Regards,

Max