`org-capture' doesn't work in the default configuration.

    emacs -Q
    (setq debug-on-error t) C-j
    M-x org-capture RET
    t

This will yield the error "Target buffer ".notes" for file+headline should
be in Org mode". The backtrace is as follows:

Debugger entered--Lisp error: (error "Target buffer \".notes\" for
file+headline should be in Org mode")
  signal(error ("Target buffer \".notes\" for file+headline should be in
Org mode"))
  error("Target buffer \"%s\" for file+headline should be in Org mode"
#<buffer .notes>)
  org-capture-set-target-location()
  org-capture(nil)
  funcall-interactively(org-capture nil)
  call-interactively(org-capture record nil)
  command-execute(org-capture record)
  execute-extended-command(nil "org-capture" nil)
  funcall-interactively(execute-extended-command nil "org-capture" nil)
  call-interactively(execute-extended-command nil nil)
  command-execute(execute-extended-command)

    -- Anders Lindgren


In GNU Emacs 25.0.50.11 (x86_64-apple-darwin14.5.0, NS appkit-1348.17
Version 10.10.5 (Build 14F27))
 of 2016-01-09 built on macpro.lan
Repository revision: 90fd798aacbf92a330cf43d2670479499daf3fb1
Windowing system distributor 'Apple', version 10.3.1348
Configured using:
 'configure --without-dbus --with-ns'

Configured features:
ACL ZLIB TOOLKIT_SCROLL_BARS NS

Important settings:
  value of $LC_CTYPE: UTF-8
  locale-coding-system: utf-8-unix

Major mode: Debugger

Minor modes in effect:
  tooltip-mode: t
  global-eldoc-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  tool-bar-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  buffer-read-only: t
  line-number-mode: t
  transient-mark-mode: t

Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.
Template key:
org-capture-set-target-location: Target buffer ".notes" for file+headline
should be in Org mode
t
Template key:
Entering debugger...
Mark set
next-line: End of buffer
Making completion list...
delete-backward-char: Text is read-only

Load-path shadows:
None found.

Features:
(shadow sort mail-extr emacsbug message rfc822 mml mml-sec epg
epg-config mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev
gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums mm-util
help-fns mail-prsvr mail-utils debug seq byte-opt gv bytecomp
byte-compile cconv cl-extra help-mode org-rmail org-mhe org-irc org-info
org-gnus gnus-util org-docview doc-view jka-compr image-mode dired
cl-loaddefs pcase cl-lib org-bibtex bibtex org-bbdb org-w3m org-capture
org org-macro org-footnote org-pcomplete pcomplete org-list org-faces
org-entities noutline outline easy-mmode org-version ob-emacs-lisp ob
ob-tangle ob-ref ob-lob ob-table ob-exp org-src ob-keys ob-comint comint
ansi-color ring ob-core ob-eval org-compat org-macs org-loaddefs
format-spec find-func cal-menu easymenu calendar cal-loaddefs time-date
mule-util tooltip eldoc electric uniquify ediff-hook vc-hooks
lisp-float-type mwheel ns-win ucs-normalize term/common-win tool-bar dnd
fontset image regexp-opt fringe tabulated-list newcomment elisp-mode
lisp-mode prog-mode register page menu-bar rfn-eshadow timer select
scroll-bar mouse jit-lock font-lock syntax facemenu font-core frame
cl-generic cham georgian utf-8-lang misc-lang vietnamese tibetan thai
tai-viet lao korean japanese eucjp-ms cp51932 hebrew greek romanian
slovak czech european ethiopic indian cyrillic chinese charscript
case-table epa-hook jka-cmpr-hook help simple abbrev minibuffer
cl-preloaded nadvice loaddefs button faces cus-face macroexp files
text-properties overlay sha1 md5 base64 format env code-pages mule
custom widget hashtable-print-readable backquote cocoa ns multi-tty
make-network-process emacs)

Memory information:
((conses 16 253563 10600)
 (symbols 48 26470 0)
 (miscs 40 94 241)
 (strings 32 38311 8220)
 (string-bytes 1 1206969)
 (vectors 16 40131)
 (vector-slots 8 717112 3887)
 (floats 8 227 288)
 (intervals 56 279 0)
 (buffers 976 14))