\documentclass[spanish,book]{upmethodology-document}

% IT FAILS HERE!
\usepackage[spanish]{babel}

% \UseExtension{setlab}
\setfrontcover{classic}

\declaredocument{UP Example}{Example document}{blabla-2012-03}

\initialversion[1.0]{\makedate{11}{04}{2006}}{First release of this example}{\upmpublic}
\incversion{\makedate{19}{04}{2006}}{Add mtabular and mtable environments}{\upmpublic}
\incversion{\makedate{27}{04}{2006}}{Add package upmethodology-code}{\upmpublic}

\addauthorvalidator*[galland@arakhne.org]{St{\'e}phane}{Galland}{Original Author}

\setdockeywords{\LaTeX, Methodology Document Style, User Documentation, Extensible}

\setdocabstract{Packages upmethodology permis to write documents according to Unified Process Methodology or other methodology. It was initially wittren by St\'ephane \textsc{Galland} from Systems and Transport laboratory and is distributed by the \arakhneorg website.}

\makeatletter
\let\VERversion\upm@package@version@ver
\let\VERfmt\upm@package@fmt@ver
\let\VERdoc\upm@package@doc@ver
\let\VERfp\upm@package@fp@ver
\let\VERbp\upm@package@bp@ver
\let\VERext\upm@package@ext@ver
\let\VERtask\upm@package@task@ver
\let\VERdocclazz\upm@package@docclazz@ver
\let\VERcode\upm@package@code@ver
\makeatother

\setpublisher{WiseOwl}
\setcopyrighter{WiseOwl}
\setprintingaddress{Spain}
\defupmlogo{arakhne_org_logo}
\defupmsmalllogo{small_arakhne_org_logo}

\begin{document}

\end{document}