I've been having troubles using org-html-export-to-html in some files, I can read in the mini-buffer Wrong type argument: processp, nil.
The problem was that in #+BEGIN_SRC, I was using shell instead of bash. I think that the error showed is not intuitive, it could tell the number of line or about #+BEGIN_SRC. Thanks. -- David Arroyo Menéndez http://www.davidam.com