[tex4ht] Error using empheq package with texlive 2013 tex4ht. Missing } inserted

[Nasser M. Abbasi]

FYI;

Not sure if this is a bug in tex4ht or something else. In case someone here
might be interested in taking a look.

I posted this on

http://tex.stackexchange.com/questions/168809/error-compiling-empheq-with-texlive-2013-tex4ht-missing-inserted


-----------------
\documentclass{article}
\usepackage{empheq}
\begin{document}
\begin{empheq}[box=\fbox]{align*}
\lambda_{dutch}  &  =-0.40293\pm1.9803i\\
\lambda_{spiral}  &  =-0.069088\\
\lambda_{rolling}  &  =-56.511
\end{empheq}
\end{document}
---------------------

htlatex foo.tex

--------------------
(/usr/local/texlive/2013/texmf-dist/tex/latex/latexconfig/graphics.cfg)
(/usr/local/texlive/2013/texmf-dist/tex/latex/graphics/dvips.def)))
Overfull \hbox (8063.39311pt too wide) detected at line 8
[][][][][][][][][][]
! Missing } inserted.
<inserted text>
                 }
l.8 \end{empheq}

?
-------------------

Using

tex4ht.c (2012-07-25-19:36 kpathsea)

>pdflatex --version
pdfTeX 3.1415926-2.5-1.40.14 (TeX Live 2013)
kpathsea version 6.1.1

--Nasser