microstyle.sty and \textbf

Dear microstylers,

try this one:

%---------------------  snip!  --------------------------
%&pdflatex
\documentclass{article}

\renewcommand{\rmdefault}{ppl}
\usepackage[DVIoutput,expansion=false]{microtype}

\begin{document}
\begin{tabular}{c}
    \textbf{Greetings from MT\@protdo!}
\end{tabular}
\end{document}
%---------------------  snap!  ---------------------------


Gives me an:

! Argument of \MT@protdo has an extra }.
<inserted text>
                \par
l.9     \textbf{Greetings from MT\@protdo!}

?

 *File List*
 article.cls    2001/04/21 v1.4e Standard LaTeX document class
  size10.clo    2001/04/21 v1.4e Standard LaTeX file (size option)
microtype.sty    2004/10/27 v1.3 Micro-typography with pdfTeX (RS)
  keyval.sty    1999/03/16 v1.13 key=value parser (DPC)
  ot1ppl.fd
 ***********

Michael

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