When I use the xlop package command
\opmul[displayintermediary=None]{453}{1001205}
to display the multiplication of 453 and 1001205 without the intermediary steps, pdflatex gives me errors. This example comes straight from the xlop documentation.
Is there an easy fix? All other xlop commands seem to work fine for me.

\documentclass{...}and ending with\end{document}. – egreg Jun 26 '13 at 21:52