[luatex] another update, another 'break'

[Evan Cooch]

If in the MWE I drop the equation, and don't specify the math font 
(below), still get the error, which seems to point to fontspec as the 
culprit. Still get the following error:


luaotfload | Font names database loaded: 
C:/Users/egc/AppData/Local/MiKTeX/2.9/
luatex-cache/generic/names/otfl-names.lua(load: 
C:/Users/egc/AppData/Local/MiKT
eX/2.9/luatex-cache/generic/fonts/otf/temp-xits-regular.lua)
! LuaTeX error ...les (x86)/MiKTeX 
2.9/tex/latex/fontspec/fontspec.lua:45: atte
mpt to call upvalue 'check_script' (a nil value)
stack traceback:
  ...les (x86)/MiKTeX 2.9/tex/latex/fontspec/fontspec.lua:45: in 
function 'check
_ot_script'
  <\directlua >:1: in main chunk.
\fontspec_check_script:nTF ...ontspec_font","#1")}
                                                   \if at tempswa 
\prg_return_tr...
l.4 \setmainfont{XITS}

?

Process has been terminated ...


>
>
> \documentclass[11pt,letterpaper]{article}
>
> \usepackage{fontspec}
> \setmainfont{XITS}
> %\usepackage{unicode-math}
>   % \setmathfont{XITS Math}
>
> \begin{document}
>
> Lorem ipsum dolor sit amet, consectetur adipiscing elit. Praesent in 
> tincidunt nulla. Donec quis laoreet est. Aenean vitae est felis, a 
> venenatis magna. Mauris semper bibendum vulputate. Etiam bibendum quam 
> ut erat rutrum consequat.
>
> %\begin{equation}
> %\frac{dN}{dt}=rN\left(1-\frac{N}{K}\right)
> %\end{equation}
>
> \end{document}
>
>
>
>

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