[Tex/LaTex] Biblatex with classicthesis. \bibhang already defined

biblatexclassicthesisincompatibility

I've an issue with the bibliography in classicthesis. My main.tex:

\documentclass{scrreprt}

\usepackage[english]{babel}
\usepackage[babel]{csquotes}
\usepackage[style=numeric]{biblatex}                    

%Loaded here: microtype,graphicx,booktabs,caption,tabularx,hyperref,amsmath
\usepackage{myclassicthesis-preamble}
\usepackage{classicthesis}

\bibliography{references}

\begin{document}
Text
\end{document}

My references.bib:

@manual{label,
author= {myauth},
editor= {myedit},
title=  {mytitle},
date=   {2011}
}

Here myclassicthesis-preamble.

Finally the error:

! LaTeX Error: Command \bibhang already defined.
           Or name \end... illegal, see p.192 of the manual.
[...]
l.637 \newlength{\bibhang}
?

Problably there is something already defined in myclassicthesis-preamble, but I don't know what.

I use TeXworks in Windows 7 x64.

Best Answer

The file myclassicthesis-preamble.sty loads natbib; if you are not going to use any of the features of natbib, open the file and comment out, or delete, the lines

\PassOptionsToPackage{square,numbers}{natbib}
 \RequirePackage{natbib}                % NB: LyX likes to set natbib too, let's avoid clashes

Related Solutions

[Tex/LaTex] Command already defined – IOP publication with mhchem

Form the file ioplatexguidelines.pdf:

enter image description here

Since mhchem loads and, more importantly, requires amsmath, you have two options: stick to iopart.cls and don't use mhchem but another package offering a similar functionality, or change your document class and use mhchem; as the guideline mentions this is not a problem since they will accept your document written using any other document class.

[Tex/LaTex] ! LaTeX Error: Command \c@author already defined

The class bmcart as found on github doesn't seem to be perfectly compatible with biblatex (there are some etoolbox complaints as well).

In particular, it defines a counter \c@author which is later also defined by biblatex. Those two counters have completely different purposes, so it is not a matter of letting one package use the definition of the other.

We can however simply overwrite the class definition (hoping that this doesn't cause problems down the road) and let biblatex do its thing.

\makeatletter
\let\c@author\relax
\makeatother

The following MWE will happily compile with biblatex

\documentclass[british]{bmcart}
\usepackage[utf8]{inputenc}
\usepackage{babel}
\makeatletter
\let\c@author\relax
\makeatother
\usepackage[backend=biber, style=numeric]{biblatex}

\addbibresource{biblatex-examples.bib}        

\begin{document}
\cite{sigfridsson}
\printbibliography
\end{document}

Since the class seems to have its own bibliography package (github link) and a BibTeX styles file (github link) that is probably what you should use when submitting to the journal and not biblatex (knowing the issues that might arise when trying to do so).

Best Answer

Related Solutions

[Tex/LaTex] Command already defined – IOP publication with mhchem

[Tex/LaTex] ! LaTeX Error: Command \c@author already defined

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