bug#4871: 23.1.50; Quit: "empty or unsupported pasteboard type"

Please describe exactly what actions triggered the bug
and the precise symptoms of the bug:

1. Emacs -q
2. (setq save-interprogram-paste-before-kill t)
3. Highlight some region and hit M-w

You should hear a beap and then a message in the echo area `` Quit:
"empty or unsupported pasteboard type" ''.

In GNU Emacs 23.1.50.1 (i386-apple-darwin9.8.0, NS apple-appkit-949.54)
 of 2009-09-22 on neutron.local
Windowing system distributor `Apple', version 10.3.949
configured using `configure  '--with-ns''

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: nil
  value of $XMODIFIERS: nil
  locale-coding-system: nil
  default enable-multibyte-characters: t

Leo