Error: Undefined control sequence (MiKTeX 21.6 Windows)

[johinoli]

Hey,

today I tried to use mmacells on a fresh windows with new MiKTeX. Unfortunately, I get an error message when compiling the following minimal example:

\documentclass{article}
\usepackage{mmacells}
\begin{document}

\begin{mmaCell}{Input}
\mmaSub{x}{1} == \mmaFrac{-\mmaUnd{(\pmb{\beta})} (\pmb{\pm}) \mmaSqrt{\mmaSup{\mmaUnd{(\pmb{\beta})}}{2} - 4 \mmaUnd{(\pmb{\alpha})} \mmaUnd{(\pmb{\gamma})}}}{2 \mmaUnd{(\pmb{\alpha})}}
\end{mmaCell}

\end{document}

The error message is:

! Undefined control sequence.
...otalleftmargin \hbox_unpack_clear:N
@labels
l.5 \begin{mmaCell}{Input}

I attached the log file for more information.

Best, johinoli

[jkuczm]

This should be fixed by #42, which is already merged, but not released yet. Newest mmacells.sty file from master branch should work without this error.

[johinoli]

Works like a charm. Thank you!