Corrupted eps figures

Question

I have a problem with corrupted eps figures. It is maybe the same kind of problem in this question asked 2 years ago, which did not find an answer :

Corrupted eps figures - Tikz externalizes EPS figures correctly but Photoshop does not open them

Indeed, as same as presented in this previous topic, I send eps figures to an editor who answers me they are corrupted. I don't know the reason at all, and I can open my eps figures without any problem. So, where is the problem ?

I make my figures with a Latex file called fig.tex, using gnuplottex :

\documentclass{article}
\usepackage{gnuplottex}
\usepackage{amsmath,amssymb}
\usepackage{graphicx}
\pagestyle{empty}

\begin{document}

\begin{figure}\label{fig_U1}
\begin{gnuplot}[scale=1.0]

set terminal epslatex color 
set output "fig_U1.tex"
set style data linespoints
set key top center 
set style line 1 lt 1 lc rgb "red" lw 2
set style line 2 dt 3 lc rgb "red" lw 4
set style line 3 lt 1 lc rgb "green" lw 2
set style line 4 dt 3 lc rgb "green" lw 4
set style line 5 lt 1 lc rgb "dark-yellow" lw 2
set style line 6 dt 3 lc rgb "dark-yellow" lw 4
set style line 7 lt 1 lc rgb "dark-violet" lw 2
set style line 8 dt 3 lc rgb "dark-violet" lw 4
set style line 9 lt 1 lc rgb "blue" lw 2
set style line 10 dt 3 lc rgb "blue" lw 4
set style line 11 lt 1 lc rgb "dark-orange" lw 2
set style line 12 dt 3 lc rgb "dark-orange" lw 4
set style line 13 lt 1 lc rgb "black" lw 2
set style line 14 dt 3 lc rgb "black" lw 4
set style line 15 lt 1 lc rgb "purple" lw 2
set style line 16 dt 3 lc rgb "purple" lw 4
set style line 17 lt 1 lc rgb "#483D8B" lw 2
set style line 18 dt 3 lc rgb "#483D8B" lw 4

unset arrow
set ylabel "impurity correlation energy / $U$" font "Helvetica,22"
set title "$U$ = 1" font "Helvetica,25"

plot 3*x*x with lines ls 7 title "exact 1";
\end{gnuplot}
\end{figure}

\begin{figure}\label{fig_U10}
\begin{gnuplot}[scale=1.0]
set terminal epslatex color 
set output "fig_U10.tex"
set style data linespoints
set key top center 
set style line 1 lt 1 lc rgb "red" lw 2
set style line 2 dt 3 lc rgb "red" lw 4
set style line 3 lt 1 lc rgb "green" lw 2
set style line 4 dt 3 lc rgb "green" lw 4
set style line 5 lt 1 lc rgb "dark-yellow" lw 2
set style line 6 dt 3 lc rgb "dark-yellow" lw 4
set style line 7 lt 1 lc rgb "dark-violet" lw 2
set style line 8 dt 3 lc rgb "dark-violet" lw 4
set style line 9 lt 1 lc rgb "blue" lw 2
set style line 10 dt 3 lc rgb "blue" lw 4
set style line 11 lt 1 lc rgb "dark-orange" lw 2
set style line 12 dt 3 lc rgb "dark-orange" lw 4
set style line 13 lt 1 lc rgb "black" lw 2
set style line 14 dt 3 lc rgb "black" lw 4
set style line 15 lt 1 lc rgb "purple" lw 2
set style line 16 dt 3 lc rgb "purple" lw 4
set style line 17 lt 1 lc rgb "#483D8B" lw 2
set style line 18 dt 3 lc rgb "#483D8B" lw 4

unset arrow
set ylabel "impurity correlation energy / $U$" font "Helvetica,22"
set title "$U$ = 10" font "Helvetica,25"

plot x with lines ls 9 title "exact 2";
\end{gnuplot}
\end{figure}

\begin{figure}\label{fig_U100}
\begin{gnuplot}[scale=1.0]

set terminal epslatex color 
set output "fig_U100.tex"
set style data linespoints
set key top center 
set style line 1 lt 1 lc rgb "red" lw 2
set style line 2 dt 3 lc rgb "red" lw 4
set style line 3 lt 1 lc rgb "green" lw 2
set style line 4 dt 3 lc rgb "green" lw 4
set style line 5 lt 1 lc rgb "dark-yellow" lw 2
set style line 6 dt 3 lc rgb "dark-yellow" lw 4
set style line 7 lt 1 lc rgb "dark-violet" lw 2
set style line 8 dt 3 lc rgb "dark-violet" lw 4
set style line 9 lt 1 lc rgb "blue" lw 2
set style line 10 dt 3 lc rgb "blue" lw 4
set style line 11 lt 1 lc rgb "dark-orange" lw 2
set style line 12 dt 3 lc rgb "dark-orange" lw 4
set style line 13 lt 1 lc rgb "black" lw 2
set style line 14 dt 3 lc rgb "black" lw 4
set style line 15 lt 1 lc rgb "purple" lw 2
set style line 16 dt 3 lc rgb "purple" lw 4
set style line 17 lt 1 lc rgb "#483D8B" lw 2
set style line 18 dt 3 lc rgb "#483D8B" lw 4

unset arrow
set xlabel '$N$'  font "Helvetica,28"
set ylabel "impurity correlation energy / $U$" font "Helvetica,22"
set title "$U$ = 100" font "Helvetica,25"

plot 2*x with lines ls 11 title "exact 3";

\end{gnuplot}
\end{figure}
\end{document}

This file is included in a script called fig-tex.sh :

latex fig.tex
latex fig.tex

gnuplot fig-gnuplottex-fig1.gnuplot
gnuplot fig-gnuplottex-fig2.gnuplot
gnuplot fig-gnuplottex-fig3.gnuplot

echo "\documentclass{article}
\usepackage{graphicx}
\begin{document}
\pagenumbering{gobble}
\clearpage
\thispagestyle{empty}
\begin{figure}
\begin{center}
\scalebox{0.7}{\input{fig_U1.tex}}
\scalebox{0.7}{\input{fig_U10.tex}}
\scalebox{0.7}{\input{fig_U100.tex}}
\end{center}
\end{figure}
\end{document}" > final-fig.tex

pdflatex final-fig.tex

Such that it creates my final-fig.pdf figure. Then, I use :

$> pdf2ps final-fig.pdf
$> ps2eps final-fig.ps

to generate my final-fig.eps

Does anyone see something wrong, or an improvement that could explain why editors say these figures are corrupted ?