# Why are notes in latex-beamer not working?

I want to use the note-functionality of latex-beamer which should, according to the user guide, work as follow: I add a \note{Sometext} somewhere on a slide and if I now switch on the notes-printing using the show notes option, another slide should be inserted after the current one, containing the node "Sometext".

This doesn't work for me: The notes are always shown like this:

This is not what I expected and not what the documentation states. In fact, the notes printing can not be disabled if replacing the show notes with hide notes. They are always printed, but not on their own page.

See this minimal working example which generates the presentation above.

\documentclass[18pt]{beamer}

% Many imports
\usepackage{mdwlist}
% More imports

\usetheme{Warsaw}
\setbeameroption{show notes}

\begin{document}
\begin{frame}
\begin{itemize}
\item Eggs
\item Plants
\item Animals \note{Animals are quite huge}
\end{itemize}
\end{frame}

\end{document}

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It took me hours to find this bug, for this reason I'm publishing it here. –  theomega Sep 18 '12 at 15:06
I think you should package mwdlist include in your title of your question ... –  Kurt Sep 18 '12 at 15:17
Well, I can not answer the question 'Why are the notes not working when using the mdwlist package', I simply don't know. –  theomega Sep 18 '12 at 15:43

This problem results from including the mdwlist package in my presentation. When removing this package mdwlist import, everything works like expected:

The mdwlist package is very incompatible with latex-beamer: When including another item in the list like this:

\item<2> Animals \note<2>{Animals are quite huge}


The inclusion of mdwlist leads to the following (very strange) error, which has nothing to do with the mdwlist package:

./test.tex:15: LaTeX Error: \begin{altenv} on input line 15 ended by \end{itemize}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
...

l.15 \end{frame}

./test.tex:15: LaTeX Error: \begin{uncoverenv} on input line 15 ended by \end{beamer@framepauses}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
...

l.15 \end{frame}

./test.tex:15: Extra }, or forgotten \endgroup.
\endbeamer@frameslide ...amer@framepauses}\egroup
\ifx \beamer@frametitle \@...
l.15 \end{frame}

./test.tex:15: LaTeX Error: \begin{actionenv} on input line 15 ended by \end{beamer@frameslide}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
...

l.15 \end{frame}

./test.tex:17: LaTeX Error: \begin{itemize} on input line 15 ended by \end{document}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
...

l.17 \end{document}

(/home/dominik/Documents/Diplomarbeit/presentation/build/test.aux)
./test.tex:17: You can't use \end' in internal vertical mode.
\enddocument ... \endgroup \deadcycles \z@ \@@end

l.17 \end{document}

./test.tex:17: LaTeX Error: \begin{itemize} on input line 15 ended by \end{document}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
...

l.17 \end{document}

)
! Emergency stop.
<*> test.tex
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