I am using psfrag to replace string in eps graphics, which works fine with most eps. There are certain eps graphics that won't work with it though, which are mainly graphics exported from MestreNova software. (Some chemistry analytics software)
Minimalistic example:
\documentclass{scrbook}
\usepackage{graphicx}
\usepackage{psfrag}
\begin{document}
\begin{figure}[htbp]
\centering
\psfrag{X}{Benzene}
\includegraphics[angle=-90,scale=.4]{./1.eps} %angle or scale do not produce the error!
\end{figure}
\begin{figure}[htbp]
\centering
\psfrag{X}{Benzene}
\includegraphics{./2.eps}
\end{figure}
\end{document}
Result:
1.eps is from said software (different "X" copied from various sources and written by built-in "text annotation").
2.eps is the usual "chemdraw" eps export, which works fine.
Download for eps files.
I am using latex->dvips->gswin64c for generating pdf. (No pdflatex involved!)
Does anyone have a clue what the problem is?