Just checked, it is the same tag (release_8.0.3), there is no change like in your code.

Could you please run git blame on those lines?

On Sat, Jun 8, 2013 at 1:30 PM, Nick Dokos <ndokos@gmail.com> wrote:

Haojun Bao <baohaojun@gmail.com> writes:

> The culprit code is the following:
>
> (when :time-stamp-file
> (format-time-string
> (concat "\n")))
>
> This `when' condition is always true, because :time-stamp-file is a
> keyword and always eval to itself, never to nil.
>
> So I think org-export-time-stamp-file should be used instead of
> :time-stamp-file.
>

What version are you using? In the version I have, the code looks like
this:

(when (plist-get info :time-stamp-file)
(format-time-string
(concat "\n")))

Org-mode version 8.0.3 (release_8.0.3-197-g221768)
[nb: this version includes a few local commits (irrelevant to this subject)]
--
Nick