For me, without the setup step, python/latex doesn't work by default. `C-c
C-c`  gives me the error :
org-babel-execute-src-block: No org-babel-execute function for latex!

But with the setup step, `C-c C-c` works now.


On Mon, Jun 9, 2014 at 8:03 AM, psycho_punch <psychopunchme@gmail.com>
wrote:

> Yes, I had the same problem earlier (see the thread on required
> 'ox-publish). Here's what I did:
>
> First, I noticed that the packages get loaded only after initialization,
> so I put my org-related initialization script in the after-init-hook. Then
> after other people here told me about (package-initialize), I just placed
> it somewhere in the beginning of my emacs initialization script, and it
> worked as well.
>
> I also removed a similar script for setting up babel since I noticed my
> installation works without it anyway. I think those languages are supported
> by default.
>
>
>
> On Mon, Jun 9, 2014 at 10:54 PM, Jorge A. Alfaro-Murillo <
> jorge.a.alfaro@gmail.com> wrote:
>
>> Shiyuan <gshy2014@gmail.com> writes:
>>
>> > Hi all,
>> > I am using Emacs 24.3.9 + org-mode 8.2.6(from ELPA)
>> > I followed this instruction
>> > http://orgmode.org/worg/org-contrib/babel/languages.html#configure
>> >
>> > and added the following to my .emacs file.
>> >
>> > (org-babel-do-load-languages
>> > 'org-babel-load-languages
>> > '((python . t)
>> > (emacs-lisp . t)))
>> >
>> > After that, org-mode mysteriously switched back to the old version
>> > 7.9. Another problem is that export command C-c C-e no longer works
>> > and generates error: Symbol's function definition is void:
>> > org-defvaralias. Is there any step I missed? Thanks.
>> >
>> > Shiyuan
>>
>> Hi Shiyuan,
>>
>> Have you tried to put (package-initialize) early (say first line) in
>> your .emacs?
>>
>> Best,
>>
>> Jorge.
>>
>>
>>
>