Bug: Export fails with a type error [8.3.2 (8.3.2-10-g00dacd-elpa @ /Users/hedman/.emacs.d/elpa/org-20151005/)]

[Noruna AB c/o Hedman <fredrik.hedman@me.com>]

When exporting an org-documnent that has worked before I get the
following error

   apply: Wrong type argument: listp, #("Post-it lappar från workshop" 0 28 (:parent (#0))).

It seems that it is the header of the file that is causing problems.
The error started to occur after upgrading.  

Removing the TITLE and AUTHOR removes the error:

#+LATEX_CLASS: report
#+LATEX_CLASS_OPTIONS: [a4paper,pdftex]

#+AUTHOR: Fredrik B. Hedman
#+TITLE: Post-it lappar från workshop

Cheers,
/F




------------------------------------------------------------------------



Emacs  : GNU Emacs 24.5.1 (x86_64-apple-darwin13.4.0, NS apple-appkit-1265.21)
 of 2015-04-10 on builder10-9.porkrind.org
Package: Org-mode version 8.3.2 (8.3.2-10-g00dacd-elpa @ /Users/hedman/.emacs.d/elpa/org-20151005/)

current state:
==============
(setq
 org-export-backends '(ascii beamer html icalendar latex man md odt org)
 org-tab-first-hook '(org-hide-block-toggle-maybe
                      org-babel-hide-result-toggle-maybe
                      org-babel-header-arg-expand)
 org-latex-classes '(("beamer" "\\documentclass[presentation]{beamer}"
                      ("\\section{%s}" . "\\section*{%s}")
                      ("\\subsection{%s}" . "\\subsection*{%s}")
                      ("\\subsubsection{%s}" . "\\subsubsection*{%s}"))
                     ("article" "\\documentclass[11pt]{article}"
                      ("\\section{%s}" . "\\section*{%s}")
                      ("\\subsection{%s}" . "\\subsection*{%s}")
                      ("\\subsubsection{%s}" . "\\subsubsection*{%s}")
                      ("\\paragraph{%s}" . "\\paragraph*{%s}")
                      ("\\subparagraph{%s}" . "\\subparagraph*{%s}"))
                     ("report" "\\documentclass[11pt]{report}"
                      ("\\chapter{%s}" . "\\chapter*{%s}")
                      ("\\section{%s}" . "\\section*{%s}")
                      ("\\subsection{%s}" . "\\subsection*{%s}")
                      ("\\subsubsection{%s}" . "\\subsubsection*{%s}"))
                     ("book" "\\documentclass[11pt]{book}"
                      ("\\part{%s}" . "\\part*{%s}")
                      ("\\chapter{%s}" . "\\chapter*{%s}")
                      ("\\section{%s}" . "\\section*{%s}")
                      ("\\subsection{%s}" . "\\subsection*{%s}")
                      ("\\subsubsection{%s}" . "\\subsubsection*{%s}"))
                     )
 org-latex-default-packages-alist '(("AUTO" "inputenc" t) ("T1" "fontenc" t)
                                    ("" "longtable" nil) ("" "float" nil)
                                    ("" "wrapfig" nil) ("normalem" "ulem" t)
                                    ("" "amsmath" t) ("" "textcomp" t)
                                    ("" "marvosym" t) ("" "hyperref" t)
                                    ("" "amssymb" t) "\\tolerance=1000")
 org-speed-command-hook '(org-speed-command-default-hook
                          org-babel-speed-command-hook)
 org-occur-hook '(org-first-headline-recenter)
 org-metaup-hook '(org-babel-load-in-session-maybe)
 org-html-format-drawer-function '(lambda (name contents) contents)
 org-latex-format-inlinetask-function 'org-latex-format-inlinetask-default-function
 org-confirm-shell-link-function 'yes-or-no-p
 org-ascii-format-inlinetask-function 'org-ascii-format-inlinetask-default
 org-latex-format-headline-function 'org-latex-format-headline-default-function
 org-after-todo-state-change-hook '(org-clock-out-if-current)
 org-latex-format-drawer-function '(lambda (name contents) contents)
 org-odt-format-headline-function 'org-odt-format-headline-default-function
 org-from-is-user-regexp "\\<Fredrik Hedman\\>"
 org-src-mode-hook '(org-src-babel-configure-edit-buffer
                     org-src-mode-configure-edit-buffer)
 org-agenda-before-write-hook '(org-agenda-add-entry-text)
 org-babel-pre-tangle-hook '(save-buffer)
 org-mode-hook '(turn-on-auto-fill
                 #[nil "\300\301\302\303\304$\207"
                   [org-add-hook change-major-mode-hook org-show-block-all
                    append local]
                   5]
                 #[nil "\300\301\302\303\304$\207"
                   [org-add-hook change-major-mode-hook
                    org-babel-show-result-all append local]
                   5]
                 org-babel-result-hide-spec org-babel-hide-all-hashes)
 org-archive-hook '(org-attach-archive-delete-maybe)
 org-ascii-format-drawer-function '(lambda (name contents width) contents)
 org-odt-format-inlinetask-function 'org-odt-format-inlinetask-default-function
 org-ctrl-c-ctrl-c-hook '(org-babel-hash-at-point
                          org-babel-execute-safely-maybe)
 org-cycle-hook '(org-cycle-hide-archived-subtrees org-cycle-hide-drawers
                  org-cycle-show-empty-lines
                  org-optimize-window-after-visibility-change)
 org-footnote-define-inline t
 org-babel-tangle-lang-exts '(("python" . "py") ("emacs-lisp" . "el")
                              ("elisp" . "el"))
 org-confirm-elisp-link-function 'yes-or-no-p
 org-metadown-hook '(org-babel-pop-to-session-maybe)
 org-odt-format-drawer-function '(lambda (name contents) contents)
 org-html-format-headline-function 'org-html-format-headline-default-function
 org-completion-use-ido t
 org-indirect-buffer-display 'current-window
 org-babel-load-languages '((python . t))
 org-html-format-inlinetask-function 'org-html-format-inlinetask-default-function
 org-clock-out-hook '(org-clock-remove-empty-clock-drawer)
 )