# Error with veelo chapter style

When using XeLaTeX on OS X 10.8, I have problems using memoir and the veelo chapter style. The following code gives me the error

! Undefined control sequence.
<argument> \hspace {.8em}\resizebox
{!}{\beforechapskip }{\chapnumfont \thec...
l.5 \chapter{This is chapter 1}


I have narrowed it down to the use of the veelo chapter style, but I don't really know where to go from there.

\documentclass[9pt, twoside, onecolumn]{memoir}
\usepackage{hyperref}
\chapterstyle{veelo}
\begin{document}
\chapter{This is chapter 1}
\section{A new section}
The hyperref should be \href{mailto:dummy@email.org}{dummy@email.org}
\end{document}


Please add \usepackage{graphicx} to avoid the error. See section B.1.5 of the manual of memoir:
If you use this style you will also need to use the graphicx package [CR99] because of the \resizebox macro. The veelo style works best for chapters that start on recto pages.