[ESS] Error starting R

[Neil Shephard]

Hi,

I've recently encountered a problem which prevents me from using M-x R to
start an R session under Emacs.  On doing so I'm informed that...

autoload-do-load: Wrong type argument: consp, nil

I'm using Emacs 25.3.1 with ESS installed from ELPA (20181003.755).  I've
asked on the Emacs Stackexchange (
https://emacs.stackexchange.com/q/45010/10100) and was advised to disable
in turn different settings that are loaded.  I've gone through this for all
ESS settings (see below) but the problem persists, I then tried disabling
loading the other modes I have under Emacs but again the problem persisted.

Any ideas or suggestions on how to resolve this would be very much
appreciated.

Thanks in advance.

Neil

The traceback on this error is...

Debugger entered--Lisp error: (wrong-type-argument consp nil)
  byte-code("\301\30\"\303\241\210\301\30\"\305\241\210\306\307\300\"\207"
[ess-r-customize-alist assoc ess-font-lock-keywords (quote
ess-R-font-lock-keywords) inferior-ess-font-lock-keywords (quote
inferior-ess-r-font-lock-keywords) defalias R-customize-alist] 3)
  autoload-do-load((autoload "ess-r-mode" "Call 'R', the 'GNU S' system
from the R Foundation.\nOptional prefix (\\[universal-argument]) allows to
set command line arguments, such as\n--vsize.  This should be OS
agnostic.\nIf you have certain command line arguments that should always be
passed\nto R, put them in the variable `inferior-R-args'.\n\nSTART-ARGS can
be a string representing an argument, a list of\nsuch strings, or any other
non-nil value.  In the latter case, you\nwill be prompted to enter
arguments interactively.\n\n(fn &optional START-ARGS)" t nil) R)
  command-execute(R record)
  execute-extended-command(nil "R" "R")
  funcall-interactively(execute-extended-command nil "R" "R")
  call-interactively(execute-extended-command nil nil)
  command-execute(execute-extended-command)

...and my ESS settings are...

;;; ESS
(require 'ess)
;;; Some generally useful key-bindings (mostly ESS specific)
(define-key global-map [f1] 'Control-X-prefix)
(define-key global-map [f2] 'save-buffer)
(define-key global-map [f3] 'find-file)
(define-key global-map [f5] 'switch-to-buffer)
(define-key global-map [f6] 'other-window)
(define-key global-map [f8] 'kill-buffer)
(define-key global-map [f9] 'ess-load-file)
;;; Other specific ESS settings you can use are the following:
(setq comint-input-ring-size 1000)
(setq ess-indent-level 4)
(setq ess-arg-function-offset 4)
(setq ess-else-offset 4)
(setq ess-eval-visibly-p nil)
;;; Set the width of the buffer automatically
(defun my-ess-post-run-hook ()
  (ess-execute-screen-options)
  (local-set-key "\C-cw" 'ess-execute-screen-options))
(add-hook 'ess-post-run-hook 'my-ess-post-run-hook)
;;; Auto-complete and ESS
(require 'auto-complete)
(require 'auto-complete-config)
(add-to-list 'ac-dictionary-directories
"~/.emacs.d/site-lisp/auto-complete/dict")
(ac-config-default)
(auto-complete-mode)
(setq ess-use-auto-complete t)
;;; Smart underscore  https://www.emacswiki.org/emacs/ess-smart-underscore.el
(require 'ess-smart-underscore)

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of improbability.* - R.A. Fisher

*Ignorance more frequently begets confidence than does knowledge* - Charles
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