Problem solved by uncommenting the "[NO-DEFAULT-PACKAGES]" and "[EXTRA]" parts (see elisp part below) in the emacs lisp initialisation of .emacs.
Am Mittwoch, 1. Oktober 2014, 02:29:23 schrieb Martin Weigele:
> That is exactly the problem, Rasmus... I am lost in the complexity of object
> and metalevels and don't really know where to start reducing it. Except for
> the naughty monster urls everything else works fine. Thanks anyway. :)
>
> Good night, Martin
>
> Am Mittwoch, 1. Oktober 2014, 02:20:45 schrieb Rasmus:
> > Martin Weigele <martin@weigele.de> writes:
> > > There you go. Thx.
> >
> > Please send a minimal example that displays the undesired behavior :)
> >
> > > #+TITLE: Blah
> > > #+AUTHOR: Me und Du
> > >
> > > #+OPTIONS: H:20
> > > #+LATEX_CLASS: scrbook
> > >
> > > #+LATEX_CLASS_OPTIONS:
> > > [paper=17cm:22cm,DIV=calc,BCOR=12mm,titlepage,11pt,scrhack]
> > >
> > > #+LATEX_HEADER: \usepackage[english,ngerman]{babel}
> > > #+LATEX_HEADER:\usepackage{
> > > #+LATEX_HEADER: fixltx2e % Verbessert einige Kernkompetenzen von
> > > LaTeX2e
> > > #+LATEX_HEADER:}
> > > #+LATEX_HEADER:\usepackage{%
> > > #+LATEX_HEADER: ellipsis, % Korrigiert den Weißraum um
> > > Auslassungspunkte
> > > #+LATEX_HEADER: ragged2e, % Ermöglicht Flattersatz mit Silbentrennung
> > > #+LATEX_HEADER: marginnote,% Für bessere Randnotizen mit \marginnote
> > > statt
> > > #+LATEX_HEADER: % \marginline
> > > #+LATEX_HEADER:}
> > > #+LATEX_HEADER:\usepackage[tracking=true]{microtype}%
> > > #+LATEX_HEADER: % Microtype ist einfach super, aber lesen Sie
> > > #+LATEX_HEADER: % unbedingt die Anleitung um das Folgende zu
> > > #+LATEX_HEADER: % verstehen.
> > > #+LATEX_HEADER: \usepackage{mathptmx, enumerate,
> > > setspace,alnumsec}\alnumsecstyle{LRald}
> > > #+LATEX_HEADER: \pagenumbering{roman}
> > > #+LATEX_HEADER: \usepackage[hyphens]{url}
> > > #+LATEX_HEADER: \usepackage{pdfpages}
> > > #+LATEX_HEADER: \usepackage{graphics, color}
> > > #+LATEX_HEADER: \usepackage{xcolor}
> > > #+LATEX_HEADER: \usepackage{graphicx, latexsym, keyval, ifthen,
> > > moreverb}
> > > #+LATEX_HEADER: \usepackage{gnuplottex}
> > > #+LATEX_HEADER: \usepackage{tikz}
> > > #+LATEX_HEADER: \usepackage{gnuplot-lua-tikz}
> > > #+LATEX_HEADER: \hypersetup{
> > > #+LATEX_HEADER: breaklinks=true,
> > > #+LATEX_HEADER: pdfkeywords={},
> > > #+LATEX_HEADER: pdfsubject={},
> > > #+LATEX_HEADER: pdfcreator={Emacs Org-mode version }}
> > >
> > > #+TEXT: [TABLE-OF-CONTENTS]
> > >
> > > -----------------------------
> > >
> > > (require 'package)
> > > (add-to-list 'package-archives '("org" . "http://orgmode.org/elpa/") t)
> > > (require 'ox-odt)
> > > (require 'org-latex)
> > > (setq org-export-latex-listings t)
> > > (add-to-list 'org-latex-classes
> > >
> > > '("scrartcl"
> > >
> > > "\\documentclass{scrartcl}"
> > >
> > > ;; [NO-DEFAULT-PACKAGES]
> > > ;; [EXTRA]"
> > >
> > > ("\\section{%s}" . "\\section*{%s}")
> > > ("\\subsection{%s}" . "\\subsection*{%s}")
> > > ("\\subsubsection{%s}" . "\\subsubsection*{%s}")
> > > ("\\paragraph{%s}" . "\\paragraph*{%s}")
> > > ("\\subparagraph{%s}" . "\\subparagraph*{%s}")))
> > >
> > > (add-to-list 'org-latex-classes
> > >
> > > '("scrbook"
> > >
> > > "\\documentclass{scrbook}"
> > >
> > > ;; [NO-DEFAULT-PACKAGES]
> > > ;; [EXTRA]"
> > >
> > > ("\\chapter{%s}" . "\\chapter*{%s}")
> > >
> > > ("\\section{%s}" . "\\section*{%s}")
> > > ("\\subsection{%s}" . "\\subsection*{%s}")
> > > ("\\subsubsection{%s}" . "\\subsubsection*{%s}")
> > > ("\\paragraph{%s}" . "\\paragraph*{%s}")
> > > ("\\subparagraph{%s}" . "\\subparagraph*{%s}")))
> > >
> > > ;; active Babel languages
> > > (org-babel-do-load-languages
> > >
> > > 'org-babel-load-languages
> > > '((gnuplot . t)))
> > >
> > > ;; add additional languages with '((language . t)))
> > > (custom-set-variables
> > >
> > > ;; custom-set-variables was added by Custom.
> > > ;; If you edit it by hand, you could mess it up, so be careful.
> > > ;; Your init file should contain only one such instance.
> > > ;; If there is more than one, they won't work right.
> > > '(org-latex-with-hyperref nil))
> > >
> > > (custom-set-faces
> > >
> > > ;; custom-set-faces was added by Custom.
> > > ;; If you edit it by hand, you could mess it up, so be careful.
> > > ;; Your init file should contain only one such instance.
> > > ;; If there is more than one, they won't work right.
> > > )
> > >
> > > ----------------------------------------------------
> > >
> > > Am Mittwoch, 1. Oktober 2014, 02:04:34 schrieb Rasmus:
> > >> Martin Weigele <martin@weigele.de> writes:
> > >> > Hi Rasmus, thank you very much, Wasn't really aware of texdoc
> > >> > <package>
> > >> > this is great. A lot improvement since the old days... :)
> > >>
> > >> TL is astonishing software.
> > >>
> > >> > Yes \url{...} is being produced by the exporter in the footnotes.
> > >> > However,
> > >> > when I try to set the values by means of #+LATEX_HEADER:
> > >> > \usepackage[hyphens] {url} I get an option clash with pdfpages, and
> > >> > if
> > >> > removed, with graphics.
> > >> >
> > >> > Also I found the information that hyperref calls the package url, but
> > >> > it
> > >> > is
> > >> > not clear to me how to influence this behaviour in time in the
> > >> > exporter.
> > >> > The story is similar if I try to modify hyperref with option
> > >> > breaklinks
> > >> > (which is perhaps just passed on to url as 'hyphens').
> > >>
> > >> Please share a complete example as org (that produces the quirk from
> > >> emacs -q) or as tex.
> > >>
> > >> A unsatisfactory solution is url shortener.
> > >>
> > >> —Rasmus