Hi Rasmus,

Oop! My apology! I've totally forgot this LCO thing. When I used koma letter for
the first time, I think I had already figured this out, and had set to using
UScommercial9. I created my own class, and assigned my class name to
`org-koma-letter-default-class'. Unfortunately, after a long time not using it,
when I've forgot the LCO thing, ox-koma-letter.el, at some point, had changed to
always producing "\LoadLetterOption{NF}", which overwrites the setting in my own
class.

Instead of setting the option in each org-mode file, I changed the value of
`org-koma-letter-class-option-file' to "UScommercial9". Thanks again for
pointing this out. Because of this issue, I've actually given up using koma
letter, and have been using the old letter class for a while.

I'm wondering why using a French style as default, while the vast majority of
the users are from the English world, I believe! Just a suggestion.


Thanks,

York