emacs-w3m namazu problem

[mr.sparkle]

Using emacs-w3m plus namazu to search local files I've indexed works
great if I only have one page of results. If, however, I get more than
one page of results I can't visit the other pages! That is, at the
bottom of the first results page there will be links for the other
results pages like so:

[1] [2] [3] etc

When I click on [2] or any other link I get the following error:

Debugger entered--Lisp error: (wrong-type-argument stringp nil)
  string-match("+\\|%\\(0D%0A\\|\\([0-9a-fA-F][0-9a-fA-F]\\)\\)" nil 0)
  w3m-url-decode-string(nil)
  w3m-about-namazu("about://namazu/?&whence=180" nil nil nil 
"about://namazu/?index=/home/vitas/NMZ/Documents/&query=emacs&whence=0" (lambda 
(type) ((lambda ... ...) type (lambda ... ...) #<buffer  *w3m-work*<6>>)))
  w3m-retrieve("about://namazu/?&whence=180" nil nil nil 
"about://namazu/?index=/home/vitas/NMZ/Documents/&query=emacs&whence=0" (lambda 
(type) ((lambda ... ...) type (lambda ... ...) #<buffer  *w3m-work*<5>>)))
  w3m-retrieve-and-render("about://namazu/?&whence=180" nil nil nil nil 
"about://namazu/?index=/home/vitas/NMZ/Documents/&query=emacs&whence=0" (lambda 
(action) ((lambda ... ...) action (lambda ... ...))))
  w3m-goto-url("about://namazu/?&whence=180" nil nil nil 
"about://namazu/?index=/home/vitas/NMZ/Documents/&query=emacs&whence=0" (lambda 
(success) ((lambda ... ...) success nil)))
  byte-code("Ä ʼn\n&‡" [url reload w3m-current-url handler w3m-goto-url nil] 
7)
  w3m-view-this-url(nil nil)
  call-interactively(w3m-view-this-url)

Any ideas?

Thanks