From mboxrd@z Thu Jan  1 00:00:00 1970
From: Marvin Doyley <m.doyley@rochester.edu>
Subject: Re: Problem with docview
Date: Sat, 11 May 2013 14:56:52 -0400
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To: ndokos@gmail.com
Cc: "emacs-orgmode@gnu.org" <emacs-orgmode@gnu.org>

Hi Nick,

I tried what you suggested, but the problem still persists.
Here the backtrace

Debugger entered--Lisp error: (error "Invalid image file name `nil'")
  signal(error ("Invalid image file name `nil'"))
  error("Invalid image file name `%s'" nil)
  image-type(nil png nil)
  create-image(nil png nil :pointer arrow)
  apply(create-image nil png nil (:pointer arrow))
  (let ((image (apply (quote create-image) file (quote png) nil args))) =
(setq doc-view-current-image image) (insert-image image (concat "[" file =
"]") nil doc-view-current-slice))
  doc-view-insert-image(nil :pointer arrow)
  (let ((beg (point))) (doc-view-insert-image (nth (1- page) =
doc-view-current-files) :pointer (quote arrow)) (put-text-property beg =
(point) (quote help-echo) doc-view-current-info))
  (let ((len (length doc-view-current-files))) (if (< page 1) (setq page =
1) (if (> page len) (progn (setq page len)))) (setq =
doc-view-current-page page doc-view-current-info (concat (propertize =
(format "Page %d of %d." doc-view-current-page len) (quote face) (quote =
bold)) (if doc-view-current-converter-process " (still converting...)\n" =
"\n") (if (and doc-view-current-search-matches (assq =
doc-view-current-page doc-view-current-search-matches)) (progn (concat =
(propertize "Search matches:\n" (quote face) (quote bold)) (let (...) =
(progn ...) contexts)))))) (setq inhibit-read-only t) (erase-buffer) =
(let ((beg (point))) (doc-view-insert-image (nth (1- page) =
doc-view-current-files) :pointer (quote arrow)) (put-text-property beg =
(point) (quote help-echo) doc-view-current-info)) (insert "\n" =
doc-view-current-info) (goto-char (point-min)) (forward-char) (setq =
inhibit-read-only nil))
  doc-view-goto-page(1)
  org-docview-open(#("540.full.pdf::1" 0 15 (org-attr nil)))
  org-open-at-point()
  org-open-at-mouse((mouse-2 (#<window 3 on *Backtrace*> 33 (58 . 15) =
250980086 nil 33 (5 . 0) nil (3 . 15) (11 . 23))))
  call-interactively(org-open-at-mouse nil nil)

cheers
M=