From mboxrd@z Thu Jan  1 00:00:00 1970
From: Alexandros Bantis <ambantis@gmail.com>
Subject: Re: ledger file in org mode hangs during code block eval
Date: Sun, 08 Apr 2012 03:32:31 -0700
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>
> Have you got:
> (org-babel-do-load-languages
>  'org-babel-load-languages
>  '((R . t)
>    (ditaa . t)
>    (dot . t)
>    (emacs-lisp . t)
>    (gnuplot . t)
>    (haskell . nil)
>    (latex . t)
>    (ledger . t)
>    (ocaml . nil)
>    (octave . t)
>    (python . t)
>    (ruby . t)
>    (screen . nil)
>    (sh . t)
>    (sql . nil)
>    (sqlite . t)))
>
> somewhere in your .emacs. FWIW Ledger and Babel work fine on Arch here.
>
> Ian.

Yes. This morning I reverted to version 7.7 and the problem went away.