Hello, I have my own org babel language implementations (very specific languages for my own software). One of these is called Jacaranda and the org babel file is ob-jacaranda.el, as one would expect.
I activate jacaranda support in org babel using (org-babel-do-load-languages 'org-babel-load-languages '((jacaranda . t) ; mine )) For illustration above, I've removed all the other languages I want enabled. In any case, when I start emacs + org, everything goes well and org babel supports my language perfectly. However, if org changes (e.g. some bug fix) and I download the new version and then try to org-reload from an existing emacs instance, I get the following error: ,---- | Debugger entered--Lisp error: (file-error "Cannot open load file" "/home/ucecesf/git/org-mode/lisp/ob-jacaranda.el") | load("/home/ucecesf/git/org-mode/lisp/ob-jacaranda.el" nil nil nosuffix) | (if (and (not uncompiled) (file-exists-p (concat f ".elc"))) (load (concat f ".elc") nil nil (quote nosuffix)) (load (concat f ".el") nil nil (quote nosuffix))) | (progn (if (and (not uncompiled) (file-exists-p (concat f ".elc"))) (load (concat f ".elc") nil nil (quote nosuffix)) (load (concat f ".el") nil nil (quote nosuffix)))) | (if (featurep (intern (file-name-nondirectory f))) (progn (if (and (not uncompiled) (file-exists-p (concat f ".elc"))) (load (concat f ".elc") nil nil (quote nosuffix)) (load (concat f ".el") nil nil (quote nosuffix))))) | (when (featurep (intern (file-name-nondirectory f))) (if (and (not uncompiled) (file-exists-p (concat f ".elc"))) (load (concat f ".elc") nil nil (quote nosuffix)) (load (concat f ".el") nil nil (quote nosuffix)))) | (lambda (f) (when (featurep (intern (file-name-nondirectory f))) (if (and (not uncompiled) (file-exists-p (concat f ".elc"))) (load (concat f ".elc") nil nil (quote nosuffix)) (load (concat f ".el") nil nil (quote nosuffix)))))("/home/ucecesf/git/org-mode/lisp/ob-jacaranda") | mapc((lambda (f) (when (featurep (intern (file-name-nondirectory f))) (if (and (not uncompiled) (file-exists-p (concat f ".elc"))) (load (concat f ".elc") nil nil (quote nosuffix)) (load (concat f ".el") nil nil (quote nosuffix))))) ("/home/ucecesf/git/org-mode/lisp/ob" "/home/ucecesf/git/org-mode/lisp/ob-comint" "/home/ucecesf/git/org-mode/lisp/ob-eval" "/home/ucecesf/git/org-mode/lisp/ob-exp" "/home/ucecesf/git/org-mode/lisp/ob-keys" "/home/ucecesf/git/org-mode/lisp/ob-lob" "/home/ucecesf/git/org-mode/lisp/ob-ref" "/home/ucecesf/git/org-mode/lisp/ob-table" "/home/ucecesf/git/org-mode/lisp/ob-tangle" "/home/ucecesf/git/org-mode/lisp/ob-R" "/home/ucecesf/git/org-mode/lisp/ob-calc" "/home/ucecesf/git/org-mode/lisp/ob-clojure" "/home/ucecesf/git/org-mode/lisp/ob-ditaa" "/home/ucecesf/git/org-mode/lisp/ob-dot" "/home/ucecesf/git/org-mode/lisp/ob-emacs-lisp" "/home/ucecesf/git/org-mode/lisp/ob-gnuplot" "/home/ucecesf/git/org-mode/lisp/ob-jacaranda" "/home/ucecesf/git/org-mode/lisp/ob-latex" "/home/ucecesf/git/org-mode/lisp/ob-ledger" "/home/ucecesf/git/org-mode/lisp/ob-maxima" "/home/ucecesf/git/org-mode/lisp/ob-octave" "/home/ucecesf/git/org-mode/lisp/ob-org" "/home/ucecesf/git/org-mode/lisp/ob-plantuml" "/home/ucecesf/git/org-mode/lisp/ob-python" "/home/ucecesf/git/org-mode/lisp/ob-ruby" "/home/ucecesf/git/org-mode/lisp/ob-sh" "/home/ucecesf/git/org-mode/lisp/ob-sqlite" "/home/ucecesf/git/org-mode/contrib/lisp/org-annotate-file" "/home/ucecesf/git/org-mode/contrib/lisp/org-bibtex-extras" "/home/ucecesf/git/org-mode/contrib/lisp/org-bookmark" "/home/ucecesf/git/org-mode/contrib/lisp/org-checklist" "/home/ucecesf/git/org-mode/contrib/lisp/org-choose" "/home/ucecesf/git/org-mode/contrib/lisp/org-collector" "/home/ucecesf/git/org-mode/contrib/lisp/org-contacts" "/home/ucecesf/git/org-mode/contrib/lisp/org-contribdir" "/home/ucecesf/git/org-mode/contrib/lisp/org-depend" "/home/ucecesf/git/org-mode/contrib/lisp/org-drill" "/home/ucecesf/git/org-mode/contrib/lisp/org-e-ascii" "/home/ucecesf/git/org-mode/contrib/lisp/org-e-html" "/home/ucecesf/git/org-mode/contrib/lisp/org-e-latex" "/home/ucecesf/git/org-mode/contrib/lisp/org-e-odt" "/home/ucecesf/git/org-mode/contrib/lisp/org-e-publish" "/home/ucecesf/git/org-mode/contrib/lisp/org-element" "/home/ucecesf/git/org-mode/contrib/lisp/org-elisp-symbol" "/home/ucecesf/git/org-mode/contrib/lisp/org-eval-light" "/home/ucecesf/git/org-mode/contrib/lisp/org-eval" "/home/ucecesf/git/org-mode/contrib/lisp/org-exp-bibtex" "/home/ucecesf/git/org-mode/contrib/lisp/org-expiry" "/home/ucecesf/git/org-mode/contrib/lisp/org-export-generic" "/home/ucecesf/git/org-mode/contrib/lisp/org-export" ...)) | (let* ((file-re "^org\\(-.*\\)?\\.el") (dir-org (file-name-directory (org-find-library-dir "org"))) (dir-org-contrib (ignore-errors (file-name-directory (org-find-library-dir "org-contribdir")))) (babel-files (mapcar (lambda (el) (concat (concat dir-org "ob") (when el (format "-%s" el)) ".el")) (append (list nil "comint" "eval" "exp" "keys" "lob" "ref" "table" "tangle") (delq nil (mapcar (lambda ... ...) org-babel-load-languages))))) (files (append babel-files (and dir-org-contrib (directory-files dir-org-contrib t file-re)) (directory-files dir-org t file-re))) (remove-re (concat (if (featurep (quote xemacs)) "org-colview" "org-colview-xemacs") "\\'"))) (setq files (mapcar (quote file-name-sans-extension) files)) (setq files (mapcar (lambda (x) (if (string-match remove-re x) nil x)) files)) (setq files (delq nil files)) (mapc (lambda (f) (when (featurep (intern (file-name-nondirectory f))) (if (and (not uncompiled) (file-exists-p (concat f ".elc"))) (load (concat f ".elc") nil nil (quote nosuffix)) (load (concat f ".el") nil nil (quote nosuffix))))) files) (load (concat dir-org "org-version.el") (quote noerror) nil (quote nosuffix))) | org-reload(nil) `---- For some reason, org tries to load my ob-jacaranda.el from where org itself sits despite ob-jacaranda.el being in one of the directories in the load-path. One possible worry: even with emacs -Q, I get org-version returning the following: Org-mode version 7.8.10 (release_7.8.10-619-g540dfc @ mixed installation! /usr/share/emacs/24.1.50/lisp/org/ and /home/ucecesf/git/org-mode/lisp/) Note the "mixed installation" bit. I've never seen this before. thanks, eric -- : Eric S Fraga (GnuPG: 0xC89193D8FFFCF67D) in Emacs 24.1.50.1 + Ma Gnus v0.6