Hello,
I'm exporting my org-mode files to HTML. I've been using:
# org-html-preamble:
# End:
to insert a custom HTML preamble and postamble for my org files for HTML export.
Just now for simplicity, I'm trying to move the preamble and postamble to an external setup file.
In my org-mode file, I now have
However, when I try to export to HTML, I get "Invalid format string"
Thanks!