On Sun, 12 May 2013, artur tarassow wrote:

> Since a while I obtain an error message trying to compile gretl-ref.pdf.
> The concrete error message is:
>
> --------------------
> ! Text line contains an invalid character.
> l.86 ^^@

Judging by the log you attached, the offending file seems to
be biblio.aux. Try deleting it.

Allin
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