Thanks Eric for your kind and smart help. I have understood, thanks to you, what was my problem: in fact in my export settings, I mention some packages that are useful only when I want to export into the smf class. http://smf4.emath.fr/Publications/Formats/ that is a nice class to produce beautiful papers. But these packages produce these strange images when they are mentioned by default in the packages list.
I have to work on my configuration to solve this problem, and your emails put me on the right way. Many thanks ! Jo. 2017-10-09 16:16 GMT+02:00 Eric S Fraga <esfli...@gmail.com>: > Joseph, > > can you please post a minimal org example that leads to the strange > image, including any configuration changes that you have made to include > the appropriate LaTeX code? > > -- > : Eric S Fraga via Emacs 27.0.50, Org release_9.1.2-98-g0b8316-git >
