In the latest org release (9.0.5), I get errors when trying to save a buffer while editing inside a babel source block. I can reproduce this using Emacs 25.1 and 25.2rc2.
Using: emacs -Q -l ~/org-debug.el where org-debug.el just consists of (package-initialize) since I've previously installed org 9.0.5 using ELPA: Open an org file, Try to edit an org file: #+BEGIN_SRC emacs-lisp (+ 1 2) #+END_SRC Navigate inside the source block, press C-c ' Then try to save: C-x C-s I get a fontification error at that point and the file does not save. If I use my whole config, this apparently snowballs into larger errors which sometimes cause Emacs to crash. Emacs : GNU Emacs 25.2.1 (x86_64-unknown-linux-gnu, GTK+ Version 3.22.9) of 2017-03-09 Package: Org mode version 9.0.5 (9.0.5-elpa @ ~/.emacs.d/elpa/org-20170210/)
