On Sunday, 18 Mar 2018 at 21:41, Samuel Wales wrote:
> On 3/13/18, Eric S Fraga <esflists@gmail.com> wrote:
>> Could you post a minimal example that illustrates this?
>
> here is the minimal example.  [btw, it turns out that pandoc erros
> now, so i have to either get your direct export code to work, or fix
> pandoc's export.]

Couple of things:

1. Start your document with a top level heading, i.e. single * heading.
2. Remove any whitespace before the \[...] entries in your
   org-latex-classes setting.

For instance, this seems to work fine for me although obviously with no
real content it is difficult to see the settings taking effect:


* NEXTKA fixing pdf to have better paragraphs
SCHEDULED: <2018-03-21 Wed>

#+begin_src emacs-lisp
(add-to-list 'org-latex-classes
             '("article"
              "
\\documentclass{scrartcl}
\[DEFAULT-PACKAGES]
\[PACKAGES]
\[EXTRA]
\\setlength{\\parindent}{0pt}
\\setlength{\\parskip}{6pt}
"
                               ("\\section{%s}" . "\\section*{%s}")
                               ("\\subsection{%s}" . "\\subsection*{%s}")
                               ("\\subsubsection{%s}" . "\\subsubsection*{%s}")
                               ("\\paragraph{%s}" . "\\paragraph*{%s}")
                               ("\\subparagraph{%s}" . "\\subparagraph*{%s}")))
#+end_src

-- 
Eric S Fraga via Emacs 27.0.50, Org release_9.1.7-475-g3ffc7d