Hello, I think I might have run into a bug with org mode (7.9.3e (7.9.3e-7-g1056fc-elpaplus) and Emacs (GNU Emacs 24.2.1 (i386-mingw-nt6.1.7601) on Windows 7. The problem occurs when exporting to html with the standard exporter. I ran into this error already more than a month ago. Since I am elsip illiterate I cannot track down the problem myself. With a minimal setup I get the following bug-report (backtrace is attached) --- Emacs : GNU Emacs 24.2.1 (i386-mingw-nt6.1.7601) of 2012-08-29 on MARVIN Package: Org-mode version 7.9.3e (7.9.3e-7-g1056fc-elpaplus @ c:/Users/pichlhoefer/AppData/Roaming/.emacs.d/elpa/org-plus-contrib-20130211/) current state: ============== (setq org-export-blocks '((src org-babel-exp-src-block nil) (export-comment org-export-blocks-format-comment t) (ditaa org-export-blocks-format-ditaa nil) (dot org-export-blocks-format-dot nil)) org-ctrl-c-ctrl-c-hook '(org-babel-hash-at-point org-babel-execute-safely-maybe) org-export-preprocess-before-selecting-backend-code-hook '(org-beamer-select-beamer-code) org-tab-first-hook '(org-hide-block-toggle-maybe org-src-native-tab-command-maybe org-babel-hide-result-toggle-maybe org-babel-header-arg-expand) org-cycle-hook '(org-cycle-hide-archived-subtrees org-cycle-hide-drawers org-cycle-show-empty-lines org-optimize-window-after-visibility-change) org-agenda-before-write-hook '(org-agenda-add-entry-text) org-speed-command-hook '(org-speed-command-default-hook org-babel-speed-command-hook) org-babel-pre-tangle-hook '(save-buffer) org-occur-hook '(org-first-headline-recenter) org-export-interblocks '((src org-babel-exp-non-block-elements)) org-metaup-hook '(org-babel-load-in-session-maybe) org-confirm-elisp-link-function 'yes-or-no-p org-export-latex-format-toc-function 'org-export-latex-format-toc-default org-export-preprocess-before-normalizing-links-hook '(org-remove-file-link-modifiers) org-clock-out-hook '(org-clock-remove-empty-clock-drawer) org-export-first-hook '(org-beamer-initialize-open-trackers) org-mode-hook '((lambda nil (org-add-hook (quote change-major-mode-hook) (quote org-show-block-all) (quote append) (quote local)) ) (lambda nil (org-add-hook (quote change-major-mode-hook) (quote org-babel-show-result-all) (quote append) (quote local)) ) #[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-export-latex-final-hook '(org-beamer-amend-header org-beamer-fix-toc org-beamer-auto-fragile-frames org-beamer-place-default-actions-for-lists) org-export-latex-after-initial-vars-hook '(org-beamer-after-initial-vars) org-metadown-hook '(org-babel-pop-to-session-maybe) org-src-mode-hook '(org-src-babel-configure-edit-buffer org-src-mode-configure-edit-buffer) org-after-todo-state-change-hook '(org-clock-out-if-current) org-confirm-shell-link-function 'yes-or-no-p ) --- Thanks for this great software! Best regards, Otto