Command \c@subfigure already defined

Question

when I try \usepackage{subcaption} immediately at the beginning of my document I get an error:

Command \c@subfigure already defined

What can I do?

Answer 1

It seems that two packages define this counter. Ensure that you only load the required packages. Here, with subcaption load caption before, but not subfigure or subfig, which do a similar job but are not required if you already use subcaption, as mentioned.

Already loading subfig and then subfigure produces this error. MWE:

\documentclass{article}
\usepackage{subfig}
\usepackage{subfigure}
\begin{document}
text
\end{document}

To sum up: just load the needed package(s), and remove unnecessary packages.