Problem with microtype and pdftricks

[Herbert Schulz]

Howdy,

Typesetting the following source with pdflatex -shell-escape

\documentclass{article}
\usepackage{pdftricks}
\usepackage{microtype} 
\begin{psinputs}
\usepackage{pstricks}
\end{psinputs}
\begin{document}
\begin{pdfpic} 
\begin{pspicture}(0,0)(3,3)
\pscircle[fillstyle=solid,fillcolor=yellow](1.5,1.5){1.5}
\pscircle[fillstyle=solid,fillcolor=black](1.0,2.0){0.15}
\pscircle[fillstyle=solid,fillcolor=black](2.0,2.0){0.15}
\pscircle[fillstyle=solid,fillcolor=black](1.5,1.3){0.1}
\psarc{(-)}(1.5,1.5){1}{235}{305}
\end{pspicture}
\end{pdfpic} 
\end{document}

gives the error

! Use of \MT at prot@group doesn't match its definition.
<recently read> \bgroup 
                        
l.17 \end{pdfpic}
                 
? 

Pressing Return gives

! Extra }, or forgotten \endgroup.
\reserved at a ...\PDFTfigname }\fi \fi \fi }\egroup 
                                                  \end {center}\global \@pdf...
l.17 \end{pdfpic}
                 
? 

Pressing Return again completes processing with a valid pdf.

If you comment out the loading of microtype it typesets without problems.

Good Luck,

Herb Schulz
herbs at wideopenwest.com