johnny_canuck - 2012-07-25

Recent updates to l3kernel and l3packages (7-19-2012 packaging timestamp) seem
to have broken interactions with several other packages, most especially
unicode-math. If I compile the following (using LuaLatex, MikTeX 2.9), all of
the maths are rendered in upright font (and not the correct italic).
Colleagues who have not update l3kernel and l3packages report have no
problems - suggesting (but not proving) the problem lies with the updates.

\documentclass{article}

\usepackage{unicode-math}
\setmainfont{Cambria}
\setmathfont{Cambria Math}

\begin{document}

Here is a simple equation:

\begin{equation}
\frac{dN}{dt}=rN\left(1-\frac{N}{K}\right)
\end{equation}

\end{document}