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
Hi!
I don't know if I am doing something wrong, if this is a feature or a
bug. Emacs asks me to assign a value to variable "10" when running Emacs
26.2 with GTK 3.24.8 and Org 9.1.14 in GNU/Linux (running as emacs -q).
Try to preview (org-babel-expand-src-block C-c C-v v) the block called
dic