[Orgmode] org-babel problem

[Erik Butz]

Hi all,

I am trying to run some org-babel code, but while this used to work in
the past, I am now getting an error which says

"Symbol's function definition is void: org-babel-get-header"

Somehow I am puzzled, since this function is defined in lisp/ob.el and
since this file provides 'ob and I have (require 'ob) in my .emacs I
don't see why this should happen.

Is there any check I should perform to see where and why this is failing?

 I am using GNU Emacs 23.1. with Org-mode version 7.3
(release_7.3.130.g9cc1) even though I somehow suspect that it's not
either of the software versions that is responsible for this.

Any hints appreciated.

Thanks,

Erik