After a reinstallation I forgot to do make autoloads.
Now, it's working perfectly.
It was my mistake, sorry and thank you for your help.

2015-04-25 18:26 GMT+00:00 Eric S Fraga <e.fraga@ucl.ac.uk>:

> On Saturday, 25 Apr 2015 at 17:55, Damian Bernardini wrote:
> > You were right.
> > If I do M-x org-version it says:
> > Org-mode version 8.3beta (release_8.3beta-1062-gce4e64-git @ mixed
> > installation! /usr/share/emacs/24.5/lisp/org/ and
> > /home/damian/git/org-mode/lisp/)
> >
> > I've downloaded org from git and loaded it with:
> > (add-to-list 'load-path "~/git/org-mode/lisp")
> > (add-to-list 'load-path "~/git/org-mode/contrib/lisp")
>
> which is what I have:
>
>   (add-to-list 'load-path "~/git/org-mode/lisp")
>   (add-to-list 'load-path "~/git/org-mode/contrib/lisp/")
>   (require 'org)
>
> Maybe you have something earlier in your initialisation that brings in
> the old version?  Have you done "make" in your ~/git/org-mode directory?
>
> What happens if you start emacs with -Q, execute the lines above
> and then visit your ledger org file?
>
> --
> : Eric S Fraga (0xFFFCF67D), Emacs 25.0.50.1, Org
> release_8.3beta-1062-gce4e64
>