On 4/4/20 7:30 AM, Eric S Fraga wrote:
> On Friday,  3 Apr 2020 at 16:49, Charles Millar wrote:
>> 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')
> 
> It should be default-koma-letter here.
> 
> To figure out what is wrong, you may wish to export to LaTeX first and
> then have a look at what has been generated.
> 
> In any case, to use the letter style, I have the following in my org
> customization:
> 
>    (require 'ox-koma-letter)
> 
> and then use the "k" option for the exporter (C-c C-e k) to export as a
> letter.
> 

OK, started over.

Please see attached backtrace and the file I used.

Also, in my init file I commented out my customized latex classes, just 
in case. See attached latex-classes file for the org-latex-classes.