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From: Nick Dokos <ndokos@gmail.com>
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Date: Mon, 03 Oct 2016 13:08:25 -0400
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Eric S Fraga <e.fraga@ucl.ac.uk> writes:

> On Friday, 30 Sep 2016 at 21:09, Julien Cubizolles wrote:
>> When an export from org to pdf fails, the error message refers to a *Org
>> PDF LaTeX Output* buffer that doesn't seem to have been created on my
>> setup. Is it an old message from a previous behaviour long gone ?
>
> No, this is current behaviour.  The buffer should definitely be created
> but probably only if the org is exported to LaTeX without error.  It could
> be the exporter is failing before it attempts to compile the LaTeX into
> PDF.  Check your messages (C-h e)?  Typical error that causes the first
> step to fail would be dangling links, for instance.

It's there even if there is an error (and arguably, that's the most useful case).
But I didn't try the async case which seems to cause the problem that the OP ran
into.

-- 
Nick