Re: Lisp error: (wrong-type-argument stringp nil)

[Carsten Dominik <carsten.dominik@gmail.com>]

Hi Sebastian,

do you have agenda-follow-mode on?

Also, can you please hit the bug again in the debugger and then press

e m RET

and let me know what the debuffer reports?  This should retrieve the  
value of m.

One possible reason to get this bug is to kill the buffer one of one  
of the agenda files and then to revisit it.  The marker will then not  
be nil, but it will point nowhere....

Thanks.

- Carsten

On Oct 13, 2010, at 4:57 PM, Sébastien Vauban wrote:

> Hello,
>
> For some reasons, sometimes the agenda view works normally,  
> sometimes not.
> When not, I have the following error when moving (with arrow down)  
> from line
> to line:
>
> #+begin_src emacs-lisp
> Debugger entered--Lisp error: (wrong-type-argument stringp nil)
>  set-buffer(nil)
>  (if (markerp m) (set-buffer (marker-buffer m)))
>  (save-excursion (if (markerp m) (set-buffer ...)) (save-excursion  
> (goto-char ...) (org-display-outline-path t)))
>  (org-with-point-at m (org-display-outline-path t))
>  (if (and m org-agenda-show-outline-path) (org-with-point-at m (org- 
> display-outline-path t)))
>  (let ((m ...)) (if (and org-agenda-follow-mode m) (org-agenda- 
> show)) (if (and m org-agenda-show-outline-path) (org-with-point-at  
> m ...)))
>  org-agenda-do-context-action()
>  org-agenda-next-line()
>  call-interactively(org-agenda-next-line nil nil)
> #+end_src
>
> I don't understand the cause of this, moreover as I have the linked  
> file open
> in my Emacs.
>
> Of course, since I've just reinstalled my Emacs, Org, and so on, on  
> a new
> Windows setup, I have many small differences with before.
>
> Someone would have an idea for this?
>
> Best regards,
>  Seb
>
> -- 
> Sébastien Vauban
>
>
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- Carsten