Latex class files in async export?

[D Bro <dabroyoh@gmail.com>]

I have the following definition in my org-mode file:

    (add-to-list 'org-latex-classes ;; https://emacs.stackexchange.com/questions/29694/spacemacs-and-org-mode-configuration-problem
                 '("koma-article"
                   "\\documentclass{scrartcl}"
                   ("\\section{%s}" . "\\section*{%s}")
                   ("\\subsection{%s}" . "\\subsection*{%s}")
                   ("\\subsubsection{%s}" . "\\subsubsection*{%s}")
                   ("\\paragraph{%s}" . "\\paragraph*{%s}")
                   ("\\subparagraph{%s}" . "\\subparagraph*{%s}"))))


Yet it doesn’t seem to be visible when I do an async export to PDF.  When I try an async export to PDF, I get “Process ‘org-export-process’ exited abnormally”.  The PDF is not altered.

I’m no longer getting an export stack buffer, but when I was, it was complaining about the class ‘koma-article’, to me indicating it couldn’t be found.  I don’t know why that buffer is no longer being generated.

Many thanks,
Ed B.