# AUCTeX Preview rung error

I'm new to emacs and AUCTeX and I'm having a problem with document preview (C-c C-p C-d). My LaTeX file is the following

\documentclass[11pt, a4paper]{report}
\usepackage{cite}

\begin{document}
\tableofcontents

\chapter{Introduzione}

\emph{This is important}

$$e^{\pi i}+1=0$$

\cite{Col73}

\bibliography{bibliography}{}
\bibliographystyle{plain}
\end{document}

%%% Local Variables:
%%% mode: latex
%%% TeX-master: t
%%% End:


and, of course it compiles. When I try to preview it I get the following messages:

Running Preview-Ghostscript' with /usr/bin/rungs -dOutputFile\=$$pippo.prv/tmp6365EzV/pr1-\%d.png$$ -q -dDELAYSAFER -dNOPAUSE -DNOPLATFONTS -dPrinted -dTextAlphaBits\=4 -dGraphicsAlphaBits\=4 -sDEVICE\=png16m -r99.0866x99.0685''

Preview-Ghostscript exited abnormally with code 1 at Thu Feb 15 11:11:16
Unable to read environment locale:exit now.

Preview-Ghostscript exited abnormally with code 1


My emacs version is 25.3.1, GS is 9.22. I read around that there were some incompatibility between such versions. Do you know how to solve the problem?

preview-latex is compatible with Ghostscript 9.22 where the operator .runandhide is removed. All occurrences of .runandhide in preview-latex are replaced by alternative code making it work with Ghostscript 9.22 again.
As a side note, don't use $$...$$ in LaTeX documents. It may result in weird vertical spacing issues. Load the package amsmath and use one of its environments.
• The version of my AUCTeX (installed with package manager) is 12.1.0. I tried to do the preview again and what I get are work-in-progress triangular symbol instead of formulae. The error is Preview-PDF2DSC exited abnormally with code 1 at Fri Feb 16 10:04:55 PDF2DSC sentinel: Opening input file: No such file or directory, /home/.../main.prv/tmp2757gyG/preview.dsc What should I do? How to remove .runandhide operator? – MaPo Feb 16 '18 at 9:08
• @MaPo - The error you describe is now something different. I suggest you try to construct and show a minimal .tex file exhibiting your problem. Also your .emacs-config reg. AUCTeX might be helpful. Please do M-x list-load-path-shadows RET` to see if you have any conflicting versions/files installed. – Arash Esbati Feb 18 '18 at 17:34