`Wrong type argument when using `org-agenda`

Question

I have been using org-agenda with the setup from here . For some reason, I get the following error when I try to generate the basic org-agenda ( Cc a ). The agenda just shows up blank with no entries. The message is below.

org-agenda-list: Wrong type argument: listp, #("----------------" 0 16 (org-heading t))

The configuration in my .spacemacs file is below. When I comment it out then things work fine, but I was hoping to get this to work.

;; Enable display of the time grid so we can see the marker for the current time
(setq org-agenda-time-grid (quote ((daily today remove-match)
                                   #("----------------" 0 16 (org-heading t))
                               (0900 1100 1300 1500 1700))))

Can anyone see the problem here? Sorry I am not much of an elisp programmer.

Answer 1

The spec of the variable org-agenda-time-grid has changed recently. If you are using a recent version of org, then your setting is incorrect. Try reading the documentation of the variable with Ch v org-agenda-time-grid RET . I don't know what that 0 16 (org-heading t) did in the old setting, but maybe you can try

(setq org-agenda-time-grid (quote 
                             ((daily today remove-match)
                              (0900 1100 1300 1500 1700)                                   
                              "......" "----------------"))))

as a first approximation and then tweak from there.

You should also try reading the etc/ORG-NEWS file which lists incompatible changes like the above for every release. When something breaks from one release to the next, the explanation can often be found there.