Please attach an actual .org file so we can test/reproduce.
Generally "unknown latex class" means you don't have the package
installed. How about posting the output of this:
$ tlmgr list --only-installed | grep scrlttr2
John
On Fri, Apr 3, 2020 at 4:06 PM Charles Millar <mill...@verizon.net> wrote:
>
> I apologize for reposting - I forgot to complete my
>
>
> -------- Forwarded Message --------
> Subject: Problem
> Date: Fri, 3 Apr 2020 16:49:15 -0400
> From: Charles Millar <mill...@verizon.net>
> To: emacs-orgmode@gnu.org <emacs-orgmode@gnu.org>
>
> I am attempting to use ox-koma-letter, etc.
>
> My set up
>
> GNU Emacs 28.0.50 (build 84, x86_64-pc-linux-gnu, GTK+ Version 3.24.14,
> cairo version 1.16.0) of 2020-04-03
> Org mode version 9.3.6 (release_9.3.6-449-gb99357 @
> /usr/local/share/org-mode/lisp/)
>
> org-latex-classes includes
>
> "default-koma-letter" "\\documentclass[11pt]{scrlttr2}"
>
> There are no other entries that include scrlttr2 in org-latex-classes
>
> I have a barebones header
>
> #+LATEX_CLASS: scrlttr2 (I also have tried 'default-koma-letter')
>
> and then entered the Romeo to Juliet letter
>
> and i receive the following error
>
> Unknown LaTex class scrlttr2
>
> I searched the list and one suggested problem does not seem to be
> applicable - I do not have a mixed org installation.
>
> Any suggestions.
>
> Charlie Millar
>
