Debugger entered--Lisp error: (invalid-regexp "Invalid regular expression")
  re-search-forward("\\(?:\\\\label{\\(?1:[^}]*\\)}\\|\\[[^]]*\\<label[[:space:]]*=[[:space:]]*{?\\(?1:[^],}]+\\)}?\\)\\|\\(^\\)[ 	]*\\\\\\(begin{SaveListing}\\|part\\|chapter\\|section\\|subsection\\|subsubsection\\|paragraph\\|subparagraph\\|addchap\\|addsec\\)\\*?\\(\\[[^]]*\\]\\)?[[{ 	
\n\\]\\|\\(^\\)[ 	]*\\\\\\(include\\|input\\|subfile\\)[{ 	]+\\([^} 	\n
]+\\)\\|\\(^\\)[ 	]*\\(\\\\appendix\\)\\|\\(\\\\glossary\\|\\\\index\\|\\\\nomenclature\\)[[{]" nil t)
  (while (re-search-forward regexp nil t) (cond (... ...) (... ... ... ... ...) (... ... ...) (... ... ...) (... ...) (... ...) (t ...)))
  (save-restriction (widen) (goto-char 1) (while (re-search-forward regexp nil t) (cond ... ... ... ... ... ... ...)) (when (setq tmp ...) (push ... docstruct)) (goto-char 1) (when (re-search-forward "\\(\\`\\|[\n
]\\)[ 	]*\\\\begin{thebibliography}" nil t) (push ... docstruct)) (goto-char 1) (while (re-search-forward "[\n
][ 	]*\\\\externaldocument\\(\\[\\([^]]*\\)\\]\\)?{\\([^}]+\\)}" nil t) (push ... docstruct)) (push (list ... file) docstruct))
  (save-excursion (save-restriction (widen) (goto-char 1) (while ... ...) (when ... ...) (goto-char 1) (when ... ...) (goto-char 1) (while ... ...) (push ... docstruct)))
  (let ((case-fold-search nil)) (save-excursion (save-restriction ... ... ... ... ... ... ... ... ...)))
  (progn (set-syntax-table reftex-syntax-table) (let (...) (save-excursion ...)))
  (unwind-protect (progn (set-syntax-table reftex-syntax-table) (let ... ...)) (set-syntax-table saved-syntax))
  (let ((saved-syntax ...)) (unwind-protect (progn ... ...) (set-syntax-table saved-syntax)))
  (reftex-with-special-syntax (save-excursion (save-restriction ... ... ... ... ... ... ... ... ...)))
  (save-excursion (message "Scanning file %s" file) (set-buffer (setq next-buf ...)) (setq file (buffer-file-name)) (push (list ... file) docstruct) (reftex-with-special-syntax (save-excursion ...)))
  (catch (quote exit) (setq file-found (reftex-locate-file file "tex" master-dir)) (if (and ... ...) (setq file-found ...)) (unless file-found (push ... docstruct) (throw ... nil)) (save-excursion (message "Scanning file %s" file) (set-buffer ...) (setq file ...) (push ... docstruct) (reftex-with-special-syntax ...)) (reftex-kill-temporary-buffers next-buf))
  (let ((regexp ...) (bound 0) file-found tmp include-file (level 1) (highest-level 100) toc-entry index-entry next-buf buf) (catch (quote exit) (setq file-found ...) (if ... ...) (unless file-found ... ...) (save-excursion ... ... ... ... ...) (reftex-kill-temporary-buffers next-buf)) docstruct)
  reftex-parse-from-file("/home/oub/ALLES/Karp/Static-Solutions/EulerPoisson_Uwe/proto-euler-poisson-banach.tex" nil "/home/oub/ALLES/Karp/Static-Solutions/EulerPoisson_Uwe/")
  (setq docstruct (reftex-parse-from-file from-file docstruct master-dir))
  (unwind-protect (setq docstruct (reftex-parse-from-file from-file docstruct master-dir)) (reftex-kill-temporary-buffers))
  (save-excursion (unwind-protect (setq docstruct ...) (reftex-kill-temporary-buffers)))
  (progn (save-excursion (unwind-protect ... ...)))
  (unwind-protect (progn (save-excursion ...)) (set-window-configuration #:G85164))
  (let ((#:G85164 ...)) (unwind-protect (progn ...) (set-window-configuration #:G85164)))
  (save-window-excursion (save-excursion (unwind-protect ... ...)))
  (let ((case-fold-search nil)) (save-window-excursion (save-excursion ...)))
  (progn (set-syntax-table reftex-syntax-table) (let (...) (save-window-excursion ...)))
  (unwind-protect (progn (set-syntax-table reftex-syntax-table) (let ... ...)) (set-syntax-table saved-syntax))
  (let ((saved-syntax ...)) (unwind-protect (progn ... ...) (set-syntax-table saved-syntax)))
  (reftex-with-special-syntax (save-window-excursion (save-excursion ...)))
  (let* ((old-list ...) (master ...) (true-master ...) (master-dir ...) (file ...) (true-file ...) (bibview-cache ...) (index-tags ...) from-file appendix docstruct tmp) (when (and ... ...) (setq rescan 1)) (when (string= true-file true-master) (setq rescan 1)) (setq from-file (cond ... ... ...)) (if (equal rescan 1) (setq index-tags nil)) (setq reftex-active-toc (reftex-last-assoc-before-elt ... ... old-list) appendix (reftex-last-assoc-before-elt ... ... old-list)) (reftex-init-section-numbers reftex-active-toc appendix) (if (eq rescan 1) (message "Scanning entire document...") (message "Scanning document from %s..." from-file)) (reftex-with-special-syntax (save-window-excursion ...)) (message "Scanning document... done") (setq docstruct (nreverse docstruct)) (setq docstruct (reftex-replace-label-list-segment old-list docstruct ...)) (unless (assq ... docstruct) (push ... docstruct)) (unless (assq ... docstruct) (push ... docstruct)) (unless (assq ... docstruct) (push ... docstruct)) (let* (... ... ... ...) (setcdr entry ...)) (and index-tags (setq index-tags ...)) (let (...) (if index-tag-cell ... ...)) (unless (assq ... docstruct) (let* ... ...)) (set reftex-docstruct-symbol docstruct) (put reftex-docstruct-symbol (quote modified) t))
  reftex-do-parse(1 nil)
  (cond ((equal rescan -1)) ((not ...) (reftex-do-parse 1 file)) ((member rescan ...) (reftex-do-parse rescan file)))
  reftex-access-scan-info(nil)
  (lambda (&optional type no-insert cut) "Make a LaTeX reference.  Look only for labels of a certain TYPE.\nWith prefix arg, force to rescan buffer for labels.  This should only be\nnecessary if you have recently entered labels yourself without using\nreftex-label.  Rescanning of the buffer can also be requested from the\nlabel selection menu.\nThe function returns the selected label or nil.\nIf NO-INSERT is non-nil, do not insert \\ref command, just return label.\nWhen called with 2 C-u prefix args, disable magic word recognition." (interactive) (reftex-check-recursive-edit) (reftex-access-scan-info current-prefix-arg) (let (... ... ... label labels sep sep1 style-alist) (unless reftex-refstyle ...) (unless type ...) (set-marker reftex-select-return-marker ...) (setq labels ...) (reftex-ensure-compiled-variables) (set-marker reftex-select-return-marker nil) (if ... ...) (setq type ... form ...) (cond ... ... ...)))()
  call-interactively(reftex-reference)
  recursive-edit()
  byte-code("..." [buffer-read-only noninteractive debugger-buffer middlestart debugger-args debugger-batch-max-lines pop-to-buffer debugger-mode debugger-setup-buffer count-lines 2 "...\n" message buffer-string kill-emacs debug backtrace-debug 3 t debugger-reenable "" nil recursive-edit standard-output] 3)
  debug(error (wrong-number-of-arguments define-obsolete-variable-alias 3))
  define-obsolete-variable-alias(reftex-toc-map reftex-toc-mode-map "24.1")
  load-internal("reftex-toc" nil nil nil undecided)
  load("reftex-toc" nil nil nil)
  apply(load ("reftex-toc" nil nil nil))
  dired-handler-fn(load "reftex-toc" nil nil nil)
  load("reftex-toc" nil nil nil)