Hi I am very used to the beamer style and it works on my machine quite well.
Now I took the example https://orgmode.org/manual/A-Beamer-example.html#A-Beamer-example And wanted to export it to beamer but obtained the message user-error: Unknown LaTeX class ‘beamer’ Which leaves me puzzled. I am running Ubuntu 16.04 and have installed the latest org form master. GNU Emacs master as well. Any ideas? Uwe Brauer