[emacs-wiki-discuss] Wrong type argument: stringp, nil

[franky . backeljauw]

Hello,

I just downloaded emacs-wiki.el from sacha.free.net, but when I do
M-x emacs-wiki-find-file and press enter for the default WelcomePage, I 
get the following error:

  Wrong type argument: stringp, nil

When I use set-variable debug-on-error t, I get the following output:

<debug>
Debugger entered--Lisp error: (wrong-type-argument stringp nil)
  file-exists-p(nil)
  (if (file-exists-p dirname) nil (make-directory dirname t))
  (unless (file-exists-p dirname) (make-directory dirname t))
  (let* ((dirname ...) (filename ...)) (unless (file-exists-p dirname) 
(make-directory dirname t)) $
  (if (cdr wiki) (let (...) (if ... ...) buffer) (let* (... ...) (unless 
... ...) (funcall ... file$
  emacs-wiki-find-file(("WelcomePage"))
* call-interactively(emacs-wiki-find-file)
  execute-extended-command(nil)
  call-interactively(execute-extended-command)
</debug>

Does someone know what is wrong here?  Thanks in advance.

-- Regards,

Franky B.