Document Classes ⇒ Appendix error when algorithm2e is used

[lukee]

Hello all,

I have problem to put appendix into my document.

This is the shortest code to reproduce error:

Code: Select all

\documentclass{article}
\usepackage[ruled,vlined,linesnumbered]{algorithm2e}
\usepackage[toc,page]{appendix}

\begin{document}

\begin{appendices}
\section{First Appendix}
\end{appendices}

\end{document}

And error is:

Code: Select all

! Missing number, treated as zero.
<to be read again> 
                   \c@chapter 
l.7 \begin{appendices}

When I remove algorithm2e, everything works. What I'm doing wrong?

[Stefan Kottwitz]

Hi lukee,

welcome to the board!

Your example works for me, without any error. I used algorithm2e.sty 2005/10/04 v3.9. Which version do you use? You could see it in the .log file if you add the command \listfiles to your preamble.
Perhaps update your version of algorithm2e if it's older.

Stefan

[lukee]

Hello Stefan,

Thanks for the answer. There is my file list:

*File List*
article.cls 2007/10/19 v1.4h Standard LaTeX document class
size10.clo 2007/10/19 v1.4h Standard LaTeX file (size option)
algorithm2e.sty 2008/00/00 v3.10 algorithms environments
ifthen.sty 2001/05/26 v1.1c Standard LaTeX ifthen package (DPC)
xspace.sty 2006/05/08 v1.12 Space after command names (DPC,MH)
relsize.sty 2003/07/04 ver 3.1
appendix.sty 2009/09/02 v1.2b extra appendix facilities
***********

Why my algorithm2e is newer, but have lower build number? :O

MiKTeX is saying that there's no any package updates.

[sommerfee]

There is my file list:

Same here, and same error. But I can make the error go away by changing the order of package loading, i.e. this one compiles fine here:

Code: Select all

\listfiles
\documentclass{article}
\usepackage[toc,page]{appendix}
\usepackage[ruled,vlined,linesnumbered]{algorithm2e}

\begin{document}

\begin{appendices}
\section{First Appendix}
\end{appendices}

\end{document}

Why my algorithm2e is newer, but have lower build number? :O

10 is higher than 9 so why do you think the build number is lower?

[frabjous]

I can see why he's confused about the output of \listfiles.

It inserts this earlier into the .log:

Code: Select all

********************************************************
Package `algorithm2e' Release 4.01 -- december 14 2009 --
- algorithm2e-announce@lirmm.fr mailing list for announcement about releases
- algorithm2e-discussion@lirmm.fr mailing list for discussion about package
subscribe by emailing sympa@lirmm.fr with 'subscribe <list> <firstname name>'
- Author: Christophe Fiorio (fiorio@lirmm.fr)
********************************************************

But it still puts this for the output of \listfiles (notice the nonsense date of 2008/00/00!):

Code: Select all

 *File List*
 article.cls    2007/10/19 v1.4h Standard LaTeX document class
  size10.clo    2007/10/19 v1.4h Standard LaTeX file (size option)
algorithm2e.sty    2008/00/00 v3.10 algorithms environments
  ifthen.sty    2001/05/26 v1.1c Standard LaTeX ifthen package (DPC)
  xspace.sty    2006/05/08 v1.12 Space after command names (DPC,MH)
 relsize.sty    2003/07/04 ver 3.1
appendix.sty    2009/09/02 v1.2b extra appendix facilities
 ***********

However, FWIW, the problems look like they have more to do with issues with the appendix package; in any case, that's when they are triggered.

But I can confirm that for me, the problem seemed to disappear when I loaded things in the reverse order:

Code: Select all

\listfiles
\documentclass{article}
\usepackage[toc,page]{appendix}
\usepackage[ruled,vlined,linesnumbered]{algorithm2e}

\begin{document}
\begin{appendices}
\section{First Appendix}
\end{appendices}

\end{document}

Hopefully that won't cause other issues.

[lukee]

Hi,


Thanks for the solution. Reverse order works
I've never thought that this kind of change could help.