Remember to cover the basics, that is, what you expected to happen and what in fact did happen. You don't know how to make a good report? See https://orgmode.org/manual/Feedback.html#Feedback Your bug report will be posted to the Org mailing list. ------------------------------------------------------------------------ I try to export org file to html, using C-c C-e h o I get: defconst: Symbol's value as variable is void: css-mode-syntax-table and no html file is produced. Emacs : GNU Emacs 26.1 (build 1, x86_64-w64-mingw32) of 2018-05-30 Package: Org mode version 9.1.9 (release_9.1.9-65-g5e4542 @ c:/programs/emacs-26.1-x86_64/share/emacs/26.1/lisp/org/) current state: ============== (setq 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-metadown-hook '(org-babel-pop-to-session-maybe) org-clock-out-hook '(org-clock-remove-empty-clock-drawer) org-html-format-inlinetask-function 'org-html-format-inlinetask-default-function org-enforce-todo-dependencies t org-odt-format-headline-function 'org-odt-format-headline-default-function org-agenda-files '("c:/Users/erahege/OneDrive - Ericsson AB/sprints/R3AB/ENV/envPlan.org" "v:/diary 2018.org" "c:/Users/erahege/OneDrive - Ericsson AB/sprints/R3AB/r3abPlan.org" "c:/Users/erahege/Dropbox/org/tidplan.org") org-ascii-format-inlinetask-function 'org-ascii-format-inlinetask-default org-plantuml-jar-path "~/plantuml.jar" org-blocker-hook '(org-block-todo-from-children-or-siblings-or-parent) org-mode-hook '(#[0 "\300\301\302\303\304$\207" [add-hook change-major-mode-hook org-show-block-all append local] 5] #[0 "\300\301\302\303\304$\207" [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-odt-format-drawer-function #[514 "\207" [] 3 "\n\n(fn NAME CONTENTS)"] org-archive-hook '(org-attach-archive-delete-maybe) org-confirm-elisp-link-function 'yes-or-no-p org-agenda-before-write-hook '(org-agenda-add-entry-text) org-metaup-hook '(org-babel-load-in-session-maybe) org-bibtex-headline-format-function #[257 "\300\236A\207" [:title] 3 "\n\n(fn ENTRY)"] org-babel-pre-tangle-hook '(save-buffer) org-tab-first-hook '(org-babel-hide-result-toggle-maybe org-babel-header-arg-expand) org-babel-load-languages '((emacs-lisp . t) (plantuml . t)) org-export-backends '(ascii html md odt) org-ascii-format-drawer-function #[771 "\207" [] 4 "\n\n(fn NAME CONTENTS WIDTH)"] org-occur-hook '(org-first-headline-recenter) org-cycle-hook '(org-cycle-hide-archived-subtrees org-cycle-hide-drawers org-cycle-show-empty-lines org-optimize-window-after-visibility-change) org-speed-command-hook '(org-speed-command-activate org-babel-speed-command-activate) org-odt-format-inlinetask-function 'org-odt-format-inlinetask-default-function org-confirm-shell-link-function 'yes-or-no-p org-link-parameters '(("id" :follow org-id-open) ("rmail" :follow org-rmail-open :store org-rmail-store-link) ("mhe" :follow org-mhe-open :store org-mhe-store-link) ("irc" :follow org-irc-visit :store org-irc-store-link) ("info" :follow org-info-open :export org-info-export :store org-info-store-link) ("gnus" :follow org-gnus-open :store org-gnus-store-link) ("docview" :follow org-docview-open :export org-docview-export :store org-docview-store-link) ("bibtex" :follow org-bibtex-open :store org-bibtex-store-link) ("bbdb" :follow org-bbdb-open :export org-bbdb-export :complete org-bbdb-complete-link :store org-bbdb-store-link) ("w3m" :store org-w3m-store-link) ("file+sys") ("file+emacs") ("doi" :follow org--open-doi-link) ("elisp" :follow org--open-elisp-link) ("file" :complete org-file-complete-link) ("ftp" :follow (lambda (path) (browse-url (concat "ftp:" path)))) ("help" :follow org--open-help-link) ("http" :follow (lambda (path) (browse-url (concat "http:" path)))) ("https" :follow (lambda (path) (browse-url (concat "https:" path)))) ("mailto" :follow (lambda (path) (browse-url (concat "mailto:" path)))) ("news" :follow (lambda (path) (browse-url (concat "news:" path)))) ("shell" :follow org--open-shell-link)) org-html-format-drawer-function #[514 "\207" [] 3 "\n\n(fn NAME CONTENTS)"] org-html-format-headline-function 'org-html-format-headline-default-function ) *** E-Mail body has been placed on clipboard, please paste it here! ***