Sounds like he has a mixed install running two different versions of Org-mode at once. The `org-reverse-string' functions *does* exist in the current version of Org-mode.
"Sebastien Vauban" <sva-n...@mygooglest.com> writes: > Hello, > > I don't have full details, but some friend of mine installed Org from ELPA, > and got problems. He did reinstall once again version 20130422 of Org and > still gets: > >> org-babel-chomp: Symbol's function definition is void: >> org-reverse-string > > Is it something know to anybody? > > Best regards, > Seb -- Eric Schulte http://cs.unm.edu/~eschulte