Does someone suceed using `unicode-math` with LuaLaTeX on MiKTeX?

Does someone suceed using `unicode-math` with LuaLaTeX on MiKTeX?

This bug should have been fixed two month ago:
https://sourceforge.net/p/miktex/bugs/2276/
But I still can't work with it. I am getting as first error:
lualatex> \um_set_mathcode:nnn #1#2#3^^@-\Umathcode...
and lots more of this type.
An MWE I found somewhere around here:
% arara: lualatex
\documentclass{article}
\usepackage{unicode-math}
\setmathfont{XITS Math}
\begin{document}
U+2206: $∆$
U+0394: $Ä$
\end{document}
I am using MiKTeX 2.9 fully updated on Win XP 64 bit.