Getting vinculum in fractions with Asana Math and unicode-math

Question

With this minimal example

\documentclass[a4paper,12pt]{article}
\usepackage{fontspec}
\usepackage{unicode-math}
\setmathfont{Asana Math}
\begin{document}
$\frac{2\pi r}{r} = 2\pi$
\end{document}

I am unable to get the horizontal bar or vinculum for the fraction on the left.

I am new to unicode-math, and want to use the Asana Math font with Minion Pro as my main font, compiling the document with xelatex.

Can someone please suggest what is wrong and how to correct it?

Many thanks.

Answer 1

You are possibly using a 64bit operating system and the 64bit version of XeTeX. There seems to be a long-standing bug in 64bit XeTeX that makes it basically unusable with unicode-math. 32bit XeLaTeX compiles your example correctly.

If you want to continue using XeLaTeX, you should install the 32bit binaries from TeX Live and change $PATH accordingly. (On modern systems using 32bit binaries in a 64bit OS shouldn't be a problem.)

Answer 2

I have no problem and here is my output with current TeXLive2010 and the otf version of Asana from CTAN. I run the document with lualatex.