23.0.60; doc-view: occasionally stuck at welcome screen

[Markus Triska <markus.triska@gmx.at>]

When I do M-x doc-view-clear-cache, and then:

   $ emacs -Q file.pdf

doc-view correctly displays the file (for example, with:
http://www.logic.at/prolog/testqueens.pdf ). If I quit, and again

   $ emacs -Q file.pdf

then doc-view is stuck at the welcome screen. (When I press "C-c" four
times, it displays the document.) When I do M-x doc-view-clear-cache,
I can again view the document with "emacs -Q file.pdf", but it fails
on every later attempt ("emacs -Q..."), until I clear the cache again.


In GNU Emacs 23.0.60.2 (i386-apple-darwin8.11.1, GTK+ Version 2.12.9)
 of 2008-04-15 on mt-computer.local
Windowing system distributor `The XFree86 Project, Inc', version 11.0.40400000
configured using `configure  '--disable-font-backend''

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