[O] Agenda view: Displaying the contents of a task

[Alan Schmitt]

Hello,

I'm trying to have an agenda view where the TODO entries show the
subtree below, so that I can export them and have all the information
required. I've been looking around and it seems that what I want to do
is a "tags-tree", according to this message:
http://lists.gnu.org/archive/html/emacs-orgmode/2008-12/msg00229.html

Unfortunately I cannot get this to work, even using the example from the
manual (http://orgmode.org/manual/Setting-Options.html). If I use the
following custom view

              ("U" tags-tree "address@hidden"
               ((org-show-following-heading nil)
                (org-show-hierarchy-above nil)))

I get a "org-check-for-org-mode: Cannot execute org-mode agenda command
on buffer in org-agenda-mode" error when I try to view it.

Is this a bug with tags-tree? Is there a way to do what I want without
using tags-tree?

Thanks a lot,

Alan