[Tex/LaTex] Compilation error with media9 package

errorsmedia9

While using media9 package, I'm getting the following error :

Argument of \bool_if:nTF has an extra }

I'm unable to figure out where does the error come from. Here is the minimal example:

\documentclass{beamer} 
\mode<presentation>
\usepackage{media9}
\usetheme{Darmstadt}
\setbeamercovered{transparent}

\begin{document}
\begin{frame}
\includemedia[
    activate=pageopen,
    width=200pt,height=150pt,
    addresource=c4.mp4,
    flashvars={%
            source=c4.mp4
    }  
]{}{VLC.app}%{VPlayer.swf}
\end{frame}
\end{document}

Best Answer

As Joseph Wright pointed out, I can confirm that this is a bug in media9.sty, if you replace "\msg_error:nnxx{media9}{file~not~found}{#1}" by "\msg_error:nnn{media9}{file~not~found}{#1}", there will be no error. However this points out to the fact that your file 'c4.mp4' doesn't exists or is not found.

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