# Why am I getting a frame number of 2? [closed]

Using tikz/matrix inside beamer, I have several slides with a wrong page/frame count.

Why is that so, and how can I avoid it?

MWE:

\documentclass[14pt]{beamer}
\usepackage{tikz}
\usetikzlibrary{matrix}

\begin{document}

\begin{frame}[fragile]
\frametitle{Bar}
\begin{tikzpicture}
\matrix (m) [matrix of math nodes]
{42&42\\23&23\\};
\end{tikzpicture}
\end{frame}

\end{document}


This gives me a frame number of 2/2 even though there is only one slide. I use tikz/matrices to write (category theory-ish) diagrams with arrows because diagrams.sty didn't work in beamer, and then, I use [fragile] for the code to compile because of the &.

EDIT: I found a way to solve the problem, but I'm still interested in explications (and reproduction of the problem, as it seems not every one has this bug. I'm using TeTex and beamer-3.07, both from the FreeBSD ports, so maybe it's a compatibility bug or an old version issue…)

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## closed as too localized by egreg, Joseph Wright♦Nov 30 '11 at 12:56

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I get a regular 1/1 –  egreg Nov 15 '11 at 0:11
@egreg: I get 2/1 on first pass (with pdflatex), and 2/2 on second pass… –  Axioplase Nov 15 '11 at 0:14
I always get 1/1. –  egreg Nov 15 '11 at 0:16
I get 1/1 also with beamer 3.07 on a TeX Live 2009 –  egreg Nov 15 '11 at 7:51

In 2006, support for teTeX has been stopped. I recommend installing TeX Live 2011, which is also available for FreeBSD. It also contains a newer version of beamer. With TeX Live, I get the correct behavior for your example, a single frame numbered 1/1.

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For FreebBSD, you use the "unofficial" port? Because it's not in my port tree, afaik. –  Axioplase Nov 15 '11 at 9:41

Hum, the following solved the issue, for some reason.

\begin{frame}
\frametitle{Bar}
\begin{tikzpicture}[ampersand replacement=\&]
\matrix (m) [matrix of math nodes]
{42\&42\\23\&24\\};
\end{tikzpicture}
\end{frame}

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So this sounds as though it's a bug with what happens when beamer writes a "fragile" frame to a file and then reads it back in again. However, as you're using a very old version of beamer, the best solution is as Stefan says: upgrade. –  Loop Space Nov 15 '11 at 7:45