On Fri, Jun 30, 2017 at 2:07 PM Peter Davis <pfd@pfdstudio.com> wrote:

>
> I've been using org 9.0.7/GNU Emacs 25.1.1 on Mac OS X for a while, and
> successfully exporting HTML to copy and paste into my blog.
> However, in the last day or so, this started failing. I'm unaware of
> having changed anything in my configuration.
>
> The error is ...
>
> Here's the entire file I'm using ...
>
> +============
> Does this work at all?
> +============
>
> Here's the debug traceback ...
>
> +============
> Debugger entered--Lisp error: (wrong-type-argument listp #("org test" 0 8
> (:parent (#1))))
>

You have the classic case of mixed Org installations, would be my guess.

I haven't seen this issue myself but it's a well-known issue with mixed Org
installations.

Best way that I have seen to work is to delete (M)Elpa installed Org
completely and install it again, but in an emacs -Q session, or do C-u M-x
org-reload, and then delete->reinstall Org.

Reference[1]

[1]:https://lists.gnu.org/archive/html/emacs-orgmode/2015-08/msg00318.html

More references: [2]. [3], [4], [5]

[2]: https://emacs.stackexchange.com/a/16616/115
[3]:
https://www.reddit.com/r/emacs/comments/6jeu74/getting_error_exporting_org_doc_because_it_has/
[4]: https://github.com/syl20bnr/spacemacs/issues/3246
[5]: https://github.com/yjwen/org-reveal/issues/148
-- 

Kaushal Modi