bug#36039: Preview LaTeX doesn't work when a theme is loaded

[Berthold Lorke]

Thanks, that fixed the problem!
> On 02 June 2019 at 00:09 Reinhard Kotucha <address@hidden> wrote:
> 
> 
> On 2019-06-01 at 23:37:01 +0200, Berthold Lorke wrote:
> 
>  > The command "rungs -h" spits out on the first line:
>  > GPL Ghostscript 9.27 (2019-04-04)
> 
> It's known that Ghostscript 9.27 causes trouble.  For the time being,
> until AUCTeX is adapted, it's best to revert to version 9.26.
> 
> Regards,
>   Reinhard
> 
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