From mboxrd@z Thu Jan  1 00:00:00 1970
From: Nick Dokos <nicholas.dokos@hp.com>
Subject: Re: org-agenda-custom-commands have a serious bug!?
Date: Thu, 09 Jun 2011 10:18:24 -0400
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References: <201106091347207812494@163.com>
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To: zw963 <zw963@163.com>
Cc: nicholas.dokos@hp.com, emacs-orgmode <emacs-orgmode@gnu.org>

zw963 <zw963@163.com> wrote:

> i have use org-agenda-custom-commands manage my thought and idea.
> when open my agenda custom view, I often require modified some heading content. 
> when I use org-agenda-switch-to (shortcut key "enter") open and make changes,
> save and kill this buffer return to org-agenda-command window, move point to other heading, 
> but it have a error tips."wrong type argument: stringp,nil"
> if i try to open other heading use "enter",I open a unpredictable org buffer.
> what a horrible.....
> 
> only I quit org-agenda-commands buffer, and reenter,i can work file.
> 

I can't reproduce this with the standard agenda view on Org-mode version
7.5 (baseline.265.gcfb05)

If it requires the custom agenda view to reproduce, you have to provide that.
What version of orgmode are you using? See section 1.4, "Feedback", of the
manual on how to report a bug.

Nick