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From: Arne <freyberger.arne@cox.net>
Subject: before first heading  and nil-type agenda
Date: Thu, 13 Nov 2008 02:58:46 +0000 (UTC)
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To: emacs-orgmode@gnu.org

I was having trouble getting a complete week view agenda and the left arrow and
right arrow would not move the agenda to subsequent weeks (the error displayed
would be "nil-type agenda").   The error  in the Messages buffer was
"org-back-to-heading: before first heading".   After some digging in my files I
tracked it down to a malformed heading:
The following causes nil-type agenda, or before first heading errors:
  - *My heading

This is what fixes it, note the space after the "*"
  - * My heading

I post this in case other users are struggling with the same issues and are
looking for a fix.

Since anyline that start with one or more "*" should have a space before the
first  character, the org code could automatically fix or prompt the user to
fix/warn of lines that are missing the space.   I am not a lisp programmer,  so
I apologize for not jumping in and coding the solution.