org-ref 3 setup

[Joseph Vidal-Rosset]

Hello John, (cc. list emacs-orgmode)

I have a problem with my emacs setup that is in relation with org-ref 3.

My emacs version is  29.0.50, via Prelude emacs, and my emacs is
launched with "emacs --daemon" .

Here is the error:

> Loading /home/joseph/.emacs.d/personal/myorgexport.el (source)...
> Output file:
> Warning (initialization): An error occurred while loading 
> ‘/home/joseph/.emacs.d/init.elc’:
>
> Wrong type argument: stringp, nil
>
> To ensure normal operation, you should investigate and remove the
> cause of the error in your initialization file.

With emacs --debug-init, emacs asks also an output file.

the following last lines of (i.e. the end of my orgexport.el)  are
necessary to org-ref :

(let  ((org-export-with-broken-links t)
      (org-latex-pdf-process
        '("pdflatex -interaction nonstopmode -shell-escape
-output-directory %o %f"
         "bibtex %b"
         "makeindex %b"
         "pdflatex -interaction nonstopmode -shell-escape -output-directory %o 
%f"
         "pdflatex -interaction nonstopmode -shell-escape -output-directory %o
%f")))
   (org-open-file (org-latex-export-to-pdf)))

It also seems obvious that "org-open-file" is the cause of my (small)
problem.

Your help will be welcome.

All the best,

Jo.