At Fri, 09 Dec 2011 20:49:36 +0100,
Bastien wrote:
>
> Hi,
>
> York Zhao <gtdplatform@gmail.com> writes:
>
> > I have noticed this problem for awhile and now I think it is worth reporting it
> > and hopefully get fixed.
> >
> > Here is what happened when I hit "C-c !" in org buffer:
>
> I can't reproduce this.
>

Me neither.

Matt reported a similar problem in

<http://thread.gmane.org/gmane.emacs.orgmode/41336/focus=41341>

But it seems the problem just ... fixed itself:

,----
| However, oddly, after experiencing the same issue about 6 times in a
| row, the problem mysteriously disappeared just now, and the procedure
| is working fine.  I have no idea what the issue is there -- I'll
| report when I find it again.  Maybe someone on the list can give me
| suggestions for debugging if it shows up again?
`----

To narrow down the bug it might be helpful to:

 1. Try to reproduce the bug with a minimal setup, just Emacs +
     uncompiled Org mode;

 2. If this is possible, see if it occurrs if the calendar buffer is
    already open (e.g. M-x calendar RET) -- maybe this is some kind of
    a weird race condition (?).

Best,
  -- David
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