# Beamer \visible slide transitions, caption does not work

I have the MWE with "visible" transitions; there are elements that are visible in <1> and elements that are visible in <2>.

I obtain the desired result until I try to mess with captions; the moment I try to add the caption of Figure B in <2> (commented in the MWE), I get the like one million errors, starting with:

Improper \spacefactor. \end{frame}

NOTE THAT I WANT TO ADD DIFFERENT CAPTIONS FOR FIGURES A AND B.

This is the MWE:

\documentclass{beamer}

\usepackage{tikz}
\usetikzlibrary{positioning,calc}
\usepackage[labelformat=empty,font=scriptsize,skip=0pt,
justification=raggedright,singlelinecheck=false]{caption}
\usepackage{threeparttable}

\begin{document}

\begin{frame}
\begin{figure}
\begin{measuredfigure}
\begin{tikzpicture}[remember picture, every node/.style={inner sep=0,outer sep=0,align=left}]
\node (node1) at (0,0) {\includegraphics[width=6.8cm]{example-image}};

\visible<1>{
\node[right=6.9cm of node1.south west, anchor=south west] (node2) {\includegraphics[width=3.75cm]{example-image-a}};
}
\visible<2>{
\node[right=6.9cm of node1.south west, anchor=south west] (node2) {\includegraphics[width=3.75cm]{example-image-b}};
}
\end{tikzpicture}
\visible<1>{
\captionof{figure}{\hspace{6.9cm}caption of figure A}
}
%\visible<2>{%WORKS UNTIL I TRY TO ADD THIS CAPTION
%   \captionof{figure}{\hspace{6.9cm}caption of figure B}
%}
\end{measuredfigure}
\end{figure}
\end{frame}

\end{document}


Which produces:

Note the absence of caption under B... How can I make it work?? Thanks!!

Edit: try the following MWE:

\documentclass{beamer}
\usepackage{tikz}
\usetikzlibrary{positioning}

\begin{document}
\begin{frame}
\begin{figure}
\begin{tikzpicture}[
node distance =0mm and 5mm,
every node/.style={anchor=west, align=center}
]
\node (a) {\includegraphics[width=6.8cm]{example-image}};
\visible<1>{
\node (b) [above right=of a.south east] {\includegraphics[width=3.75cm]{example-image-a}};
\node[below=of b] {caption of figure A};
}
\visible<2>{
\node (b) [above right=of a.south east] {\includegraphics[width=3.75cm]{example-image-b}};
\node[below=of b] {caption of figure B};
}
\end{tikzpicture}
\end{figure}
\end{frame}
\end{document}


In case of multi line caption is sensible define separate style for nodes with caption. For example:

 capt/.style = {text width=#1, align=left}


and than instead \node[below=of b] {caption of figure B}; use

\node[capt=3.75cm, below=of b] {caption of figure B};

• This is not what I am looking for, the caption of figure B should be different from the caption of figure A... – DaniCee Feb 2 '17 at 4:17
• I see there might be a confusion with the names I gave to the nodes, let me clarify the MWE – DaniCee Feb 2 '17 at 4:20
• Yes that's what I thought... as in my other question, we need another node for captions in these scenarios, we cannot just use captionof{figure} – DaniCee Feb 2 '17 at 5:30