Bug: org-columns-compile-format [8.2.10 (release_8.2.10-1-g8b63dc @ /home/boudiccas/git/org-mode/lisp/)]

[Sharon Kimble <boudiccas@skimble.plus.com>]

For the last couple of days I have been unable to send any emails through
gnus, or any followups to a newsgroup, because the buffer which should contain
the headers of the message and my signature have been completely blank and
empty, with just "Wrong type argument: stringp, 1" showing in the mini-buffer.
On several of my org-mode files, when opening them I get this error message
showing in the mini-buffer - "org-columns-compile-format: Wrong type argument:
stringp, 1".

I'm including a back-trace that I got yesterday -

--8<---------------cut here---------------start------------->8---
Debugger entered--Lisp error: (wrong-type-argument stringp 1)
  string-match("%\\([0-9]+\\)?\\([[:alnum:]_-]+\\)\\(?:(\\([^)]+\\))\\)?\\(?:{\\([^}]+\\)}\\)?\\s-*" 1 0)
  org-columns-compile-format(1)
  org-columns-get-format(1)
  org-columns(1)
  (lambda nil (org-columns 1))()
  run-hooks(change-major-mode-after-body-hook text-mode-hook outline-mode-hook org-mode-hook)
  apply(run-hooks (change-major-mode-after-body-hook text-mode-hook outline-mode-hook org-mode-hook))
  run-mode-hooks(org-mode-hook)
  org-mode()
  set-auto-mode-0(org-mode nil)
  #[0 "\302\242\237\211\205.