[OS X TeX] Subfigure Package

[Marco Belleschi]

I'm using TexShop for my master thesis. If I insert the package subfigure in the preamble I get the following error


! LaTeX Error: Command \c at lofdepth already defined.
               Or name \end... illegal, see p.192 of the manual.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.124 \newcounter{lofdepth}
                           
? 

This is the preamble I'm using

\documentclass[a4paper,12pt]{kth-mag}
\usepackage{url}
\usepackage{amsmath, amsthm, amssymb}
\usepackage[T1]{fontenc}
\usepackage{graphicx}
\usepackage{textcomp}
%\usepackage{subfigure}
\usepackage{lmodern}
\usepackage[latin1]{inputenc}
\usepackage[swedish,english]{babel}
\usepackage{nada-ex}


The problem seems to be really odd, because using a different compiler than TexShop I don't get this error anymore. 
Thank you in advance for any hints

/rust

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