org agenda fails, "wrong type argument: number-or-marker-p"

[junebash]

Description

After updating packages, on attempting to load org-agenda (even on startup (since I have org-agenda items on the home screen)) it fails and I get the error "Wrong type argument: number-or-marker-p, <2016-12-30 Fri>" or another datestamp.

Reverting my updated packages seemed to fix the bug, but I would like to be able to use the latest version of stuff.

Reproduction guide 🪲

• Start Emacs
• C-c a a (or , a a or , a [insert any agenda command])
• receive error above

Observed behaviour: 👀 💔
see error/traceback above/below

Expected behaviour: ❤️ 😄
I'd expect to see the org-agenda view.

System Info 💻

• OS: darwin
• Emacs: 25.1.1
• Spacemacs: 0.200.5
• Spacemacs branch: master (rev. 664ba6a)
• Graphic display: t
• Distribution: spacemacs
• Editing style: hybrid
• Completion: ivy
• Layers:

(ivy auto-completion emacs-lisp git markdown org shell spell-checking syntax-checking version-control javascript osx colors deft ibuffer themes-megapack command-log csv csharp
     (c-c   :variables c-c  -enable-clang-support t)
     html python swift yaml ruby shell-scripts lua dash tmux evil-cleverparens vinegar
     (geolocation :variables geolocation-enable-location-service t geolocation-enable-weather-forecast t)
     semantic speed-reading)

• System configuration features: NOTIFY ACL GNUTLS LIBXML2 ZLIB TOOLKIT_SCROLL_BARS NS MODULES

Backtrace 🐾

Debugger entered--Lisp error: (wrong-type-argument number-or-marker-p "<2016-12-30 Fri>")
  org-agenda-get-deadlines()
  org-agenda-get-day-entries("/Users/jonbash/notes/wwu-todo.org" (12 19 2016) :deadline :scheduled :timestamp :sexp)
  apply(org-agenda-get-day-entries "/Users/jonbash/notes/wwu-todo.org" (12 19 2016) (:deadline :scheduled :timestamp :sexp))
  org-agenda-list(nil)
  funcall-interactively(org-agenda-list nil)
  call-interactively(org-agenda-list)
  org-agenda(nil)
  funcall-interactively(org-agenda nil)
  call-interactively(org-agenda nil nil)
  command-execute(org-agenda)

[schmendrik]

I can confirm this. Repeated tasks and their timestamps are causing this problem.

This is how you reproduce the bug:
Insert this timestamp anywhere in your org file: <2015-12-07 Mon +1m>

It will cause the following error message to display in the minibuffer when you run M-x org-agenda RET a RET:

Wrong number of arguments: (1 . 5), 6

This is how you fix it: remove +1m from that timestamp (so it is <2015-12-07 Mon>) and the agenda will display as usual.

I'm on org mode version 9.0.2 (Emacs 25.1, Windows).

Edit: Also, both of the following 2 lines were causing the same issue in another org file of mine:

SCHEDULED: <2016-12-29 Thu>

DEADLINE: <2016-12-29 Thu>

[syl20bnr]

Did you try to delete all the .elc files in the org-plus-contrib folder installed in ~/.emacs.d/elpa directory ?

[schmendrik]

Actually, the problem went away after I updated org-mode.

[syl20bnr]

Marking this issue as closed since it has had. I activity for 1 month and the problem is likely related with deleting the elc files.