\documentclass[listings,drafting,spanish]{itmthesis}
%\usepackage[spanish]{babel}
%Archivos de configuración y paquetes utilizados en tu tesis:
\input{configuration}
\begin{document}
\pagenumbering{roman} % Roman page numbering 
\input{precontent}
\include{FrontBackMatter/Contents} % Contents, list of figures/tables/listings and acronyms
\pagenumbering{arabic} % Arabic page numbering
\include{Chapters/Chapter01} % Chapter 1

\end{document}