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


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



%Loaded here: microtype,graphicx,booktabs,caption,tabularx,hyperref,amsmath



My references.bib:

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

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