This happens in any mode, but basically auto complete does not work. It sort of works the first time I use it when I load Emacs but after that I get this error: Error during redisplay: (eval (list (tree-buffer-spec->sticky-indent-string tree-buffer-spec) (tree-buffer-stickynode-fetch-stickyline))) signaled (wrong-type-argument number-or-marker-p nil) [2 times] Error running timer ‘ac-show-menu’: (wrong-number-of-arguments setq 1) auto-complete error: (wrong-number-of-arguments setq 1) And after that it never works again. In GNU Emacs 25.1.1 (x86_64-apple-darwin13.4.0, NS appkit-1265.21 Version 10.9.5 (Build 13F1911)) of 2016-07-24 built on builder10-9.porkrind.org Windowing system distributor 'Apple', version 10.3.1404 Configured using: 'configure --with-ns '--enable-locallisppath=/Library/Application Support/Emacs/${version}/site-lisp:/Library/Application Support/Emacs/site-lisp'' Configured features: NOTIFY ACL LIBXML2 ZLIB TOOLKIT_SCROLL_BARS NS Important settings: value of $LANG: en_US.UTF-8 locale-coding-system: utf-8-unix Major mode: Javascript-IDE Minor modes in effect: cursor-sensor-mode: t helm-mode: t diff-auto-refine-mode: t shell-dirtrack-mode: t projectile-global-mode: t projectile-mode: t ecb-minor-mode: t global-ede-mode: t ede-minor-mode: t global-auto-revert-mode: t desktop-save-mode: t global-auto-complete-mode: t recentf-mode: t delete-selection-mode: t cua-mode: t show-paren-mode: t global-linum-mode: t linum-mode: t tooltip-mode: t global-eldoc-mode: t electric-indent-mode: t mouse-wheel-mode: t menu-bar-mode: t file-name-shadow-mode: t global-font-lock-mode: t font-lock-mode: t blink-cursor-mode: t auto-composition-mode: t auto-encryption-mode: t auto-compression-mode: t size-indication-mode: t column-number-mode: t line-number-mode: t transient-mark-mode: t Recent messages: Wrote /Users/davidgomes/src/memsql-platform/static/js/components/schema/databases.js Mark set cua-scroll-up: End of buffer Undeclared variable or function ’module’ anonymous function does not always return a value Mark set Undo! [4 times] Mark set Saving file /Users/davidgomes/src/memsql-platform/static/js/components/schema/databases.js... Wrote /Users/davidgomes/src/memsql-platform/static/js/components/schema/databases.js Load-path shadows: ~/.emacs.d/lisp/auto-complete hides /Users/davidgomes/.emacs.d/elpa/auto-complete-20160710.1544/auto-complete /Users/davidgomes/.emacs.d/elpa/helm-20160723.2238/helm-multi-match hides /Users/davidgomes/.emacs.d/elpa/helm-core-20160723.944/helm-multi-match ~/.emacs.d/lisp/popup hides /Users/davidgomes/.emacs.d/elpa/popup-20160709.729/popup Features: (shadow sort mail-extr emacsbug message rfc822 mml mml-sec epg mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums mail-utils ido winner helm-projectile vc vc-dispatcher jsx-mode cursor-sensor js2-mode etags xref project js sgml-mode cc-mode cc-fonts cc-guess cc-menus cc-cmds imenu helm-mode helm-files image-dired dired-x dired-aux ffap helm-buffers helm-elscreen helm-tags helm-bookmark helm-adaptive helm-info bookmark pp helm-locate helm-grep helm-regexp helm-external helm-net browse-url xml url url-proxy url-privacy url-expand url-methods url-history url-cookie url-domsuf url-util mailcap helm-utils helm-help helm-types helm helm-source helm-multi-match helm-lib dired vc-git diff-mode flymake python tramp-sh tramp tramp-compat tramp-loaddefs trampver shell pcomplete format-spec projectile grep ecb-layout-defs cus-edit warnings cus-start cus-load ecb ecb-symboldef ecb-analyse ecb-compatibility ecb-winman-support ecb-autogen autoload lisp-mnt ecb-tod ecb-cycle ecb-eshell ecb-help ecb-jde ecb-method-browser hideshow ecb-semantic-wrapper ecb-semantic ecb-file-browser ecb-speedbar ecb-layout compile comint ansi-color ecb-create-layout ecb-compilation ecb-common-browser ecb-navigate ecb-mode-line ecb-face tree-buffer ecb-upgrade ecb-cedet-wrapper semantic/db-mode semantic/db-find semantic/db-ref semantic/analyze semantic/sort semantic/scope semantic/analyze/fcn semantic/db semantic/format semantic/tag-ls semantic/find semantic/ctxt semantic/util-modes semantic/util semantic semantic/tag semantic/lex semantic/fw mode-local find-func ecb-util ring thingatpt ede/speedbar ede/files ede ede/detect ede/base ede/auto ede/source eieio-base eieio-speedbar speedbar sb-image ezimage dframe eieio-custom cedet autorevert filenotify ibuf-ext ibuffer bliss-theme desktop frameset fixme-mode cc-styles cc-align cc-engine cc-vars cc-defs auto-complete-config auto-complete easy-mmode advice popup cl recentf tree-widget wid-edit delsel cua-base paren linum edmacro kmacro finder-inf gh-common gh-profile url-parse auth-source gnus-util mm-util help-fns mail-prsvr password-cache url-vars rx s marshal eieio-compat cl-seq json map dash eieio eieio-core cl-macs info package epg-config seq byte-opt gv bytecomp byte-compile cl-extra help-mode easymenu cconv cl-loaddefs pcase cl-lib time-date mule-util tooltip eldoc electric uniquify ediff-hook vc-hooks lisp-float-type mwheel ns-win ucs-normalize term/common-win tool-bar dnd fontset image regexp-opt fringe tabulated-list newcomment elisp-mode lisp-mode prog-mode register page menu-bar rfn-eshadow timer select scroll-bar mouse jit-lock font-lock syntax facemenu font-core frame cl-generic cham georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao korean japanese eucjp-ms cp51932 hebrew greek romanian slovak czech european ethiopic indian cyrillic chinese charscript case-table epa-hook jka-cmpr-hook help simple abbrev minibuffer cl-preloaded nadvice loaddefs button faces cus-face macroexp files text-properties overlay sha1 md5 base64 format env code-pages mule custom widget hashtable-print-readable backquote kqueue cocoa ns multi-tty make-network-process emacs) Memory information: ((conses 16 613019 35981) (symbols 48 47733 0) (miscs 40 4733 888) (strings 32 120624 15590) (string-bytes 1 3626157) (vectors 16 76264) (vector-slots 8 1182479 51222) (floats 8 1294 369) (intervals 56 13374 1106) (buffers 976 48))