Hello,

I don't have the lastest.version of org-mode so i can't confirm.


But could you try with the option 

:results output graphics :file test.pdf

HTH,
Jeremie


On January 27, 2020 5:13:20 PM GMT+01:00, Tyler Smith <tyler@plantarum.ca> wrote:
>To reproduce:
>
>1. Start from `emacs -Q`
>
>2. open the following org file:
>
>```
>#+BEGIN_SRC elisp setup
>(require 'package)
>(setq package-load-list
>      '((org-plus-contrib t)
>	(ess t)
>	(julia-mode t)))
>(package-initialize)
>(require 'org)
>(require 'ess)
>
>(org-babel-do-load-languages
> 'org-babel-load-languages
> '((emacs-lisp . t)
>   (R . t)
>   (shell . t)))
>#+END_SRC
>
>#+RESULTS:
>
>#+begin_src R :results graphics :file test.jpg
>plot (1:10)
>#+end_src
>```
>
>3. Evaluate the first code block (C-c C-c) to load ess and setup babel
>to evaluate R code blocks
>
>4.  Evaluate the second code block.
>
>What I expect: 
>
>A `#+RESULTS:` block is inserted, with a link to the file test.jpg;
>
>What happens instead:
>
>A message appears in the minibuffer:   'Code block produced no output'.
>
>This worked previously. I'm not sure when it broke - sometime in the
>last two months I think, as I demoed this feature for colleagues in
>November.
>
>Emacs state provided below.
>
>Best,
>
>Tyler
>
>Emacs  : GNU Emacs 28.0.50 (build 2, x86_64-pc-linux-gnu, GTK+ Version
>3.22.30)
> of 2020-01-02
>Package: Org mode version 9.3 (release_9.3 @
>/home/smithty/.emacs.d/elpa/org-plus-contrib-20200127/)
>
>current state:
>==============
>(setq
>org-src-mode-hook '(org-src-babel-configure-edit-buffer
>org-src-mode-configure-edit-buffer)
> org-link-shell-confirm-function 'yes-or-no-p
> org-metadown-hook '(org-babel-pop-to-session-maybe)
> org-clock-out-hook '(org-clock-remove-empty-clock-drawer)
> org-mode-hook '(org-eldoc-load
>		 #[0 "\300\301\302\303\304$\207"
>		   [add-hook change-major-mode-hook org-show-all append local] 5]
>		 #[0 "\300\301\302\303\304$\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-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) (R . t) (shell . t))
>org-src-lang-modes '(("redis" . redis) ("php" . php) ("arduino" .
>arduino) ("C" . c) ("C++" . c++)
>		      ("asymptote" . asy) ("bash" . sh) ("beamer" . latex) ("calc" .
>fundamental)
>		      ("cpp" . c++) ("ditaa" . artist) ("dot" . fundamental) ("elisp"
>. emacs-lisp)
>		      ("ocaml" . tuareg) ("screen" . shell-script) ("shell" . sh)
>("sqlite" . sql))
> org-occur-hook '(org-first-headline-recenter)
>org-cycle-hook '(org-cycle-hide-archived-subtrees
>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-confirm-shell-link-function 'yes-or-no-p
>org-link-parameters '(("attachment" :follow org-attach-open-link
>:export org-attach-export-link
>			:complete org-attach-complete-link)
>		       ("id" :follow org-id-open) ("eww" :follow eww :store
>org-eww-store-link)
>		       ("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 :export
>org-irc-export)
>		       ("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")
>		       ("shell" :follow org-link--open-shell)
>		       ("news" :follow
>			#[257 "\301\300\302Q!\207" ["news" browse-url ":"] 5 "\n\n(fn
>URL)"])
>		       ("mailto" :follow
>			#[257 "\301\300\302Q!\207" ["mailto" browse-url ":"] 5 "\n\n(fn
>URL)"])
>		       ("https" :follow
>			#[257 "\301\300\302Q!\207" ["https" browse-url ":"] 5 "\n\n(fn
>URL)"])
>		       ("http" :follow
>			#[257 "\301\300\302Q!\207" ["http" browse-url ":"] 5 "\n\n(fn
>URL)"])
>		       ("ftp" :follow
>			#[257 "\301\300\302Q!\207" ["ftp" browse-url ":"] 5 "\n\n(fn
>URL)"])
>		       ("help" :follow org-link--open-help)
>		       ("file" :complete org-link-complete-file)
>		       ("elisp" :follow org-link--open-elisp) ("doi" :follow
>org-link--open-doi))
> org-link-elisp-confirm-function 'yes-or-no-p
> )
>
>
>-- 
>plantarum.ca