Many thanks Ivan. In reading the log file in /tmp I understood the problem
that is not an org-mode issue, but a latex one: some parts needed '$$'
tags.
Anyway, thanks for your reply.
Best wishes,
Jo.
Le mer. 22 mai 2019 à 21:46, Ivan Tadeu Ferreira Antunes Filho <
iva...@mit.edu> a écrit :
> I
I was having the same problem on some latex previews. It seems that
imagemagick expects the file to be in the /tmp/ directory while latex
itself was putting the file in the same directory.
My workaround was to use 'dvisvgm instead of 'imagemagick.
(setq org-preview-latex-default-process 'dvisvgm)
