Incompatible with beamerarticle package

[jlelong]

The following LaTeX file does not compile because of the redefinition of the \appendix command by appendixnumberbeamer.

%\documentclass{beamer}
\documentclass{article}
\usepackage{beamerarticle}
\usepackage{appendixnumberbeamer}
\begin{document}

\begin{frame}
 \frametitle{Test first frame}
 This is the first frame
\end{frame}
\section{Appendix: Useful propositions and more details}
\appendix
\begin{frame}
 \frametitle{Appendix}
 \title{Appendix} \date{}
 \maketitle{}

\end{frame}
\begin{frame}
 Nothing important
\end{frame}

\end{document}

The redefinition of the \appendix provided by appendixnumberbeamer is only valid in the presentation mode. To solve it, wrap the package content inside

\mode
<presentation>

....

\mode
<all>

Bug reported by Uwe Brauer oub@mat.ucm.es