Hi Nicolas,

My problem with org-plus-contrib exhibited itself when using a .emacs.d
based on Steve Purcell's, https://github.com/purcell/emacs.d. Specfically,
when loading ob-R, I got this error:

Invalid function: org-babel-header-args-safe-fn

In response to your email, just now I stripped that config right back to
basics, and found that my problem went away, and I was able to load ob-R
after all.  Sorry, I should have done that before.

Having realised that, I think I should report this against Steve Purcell's
.emacs.d, and leave you guys alone.

Thanks for your help.

cheers,
Simon

On 8 August 2017 at 19:50, Nicolas Goaziou <mail@nicolasgoaziou.fr> wrote:

> Hello,
>
> Simon Guest <sjg@cantab.net> writes:
>
> > Well, almost as soon as I started on that, I see some issues around
> mixing
> > old/new org-mode functionality, so this seems like a not-so-good idea
> after
> > all.
> >
> > In particular, ox-taskjuggler is using the very new org-duration
> > library.
>
> You could use "ox-taskjuggler" from maint.
>
> > I'll think of another approach, not using MELPA.
>
> I suggest to use GNU ELPA instead.
>
> > At least until the underlying problem with org-plus-contrib is
> > resolved.
>
> What exactly is the underlying problem?
>
> Regards,
>
> --
> Nicolas Goaziou
>
>