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.

Regard.

2011-06-09 



zw963