[pstricks] Trouble with \tableofcontents, miktex2.7 and pstricks

[azzam.hassan at voila.fr]

Hello every body

I encountred this problem (after updating from miktex2.6 to 2.7), I can't use the color package with the command table of contents. THIS worked very well with the miktex2.6 version. 
The problem appears when i compile twice to obtain the table of contents (with blue color). No problem when the color is removed.
Thanks for any help.

\listfiles
\documentclass[10pt]{article}
\usepackage{color,pstricks,pstricks-add}
\begin{document}
\tableofcontents
\section{Text}
Some texts
\section{{\blue Graphics}}
Hello here {\blue is an example}
\psset{algebraic=true}
\begin{pspicture*}(-.5,-1.8)(5,4)
\psaxes{->}(0,0)(-.5,-.5)(3,4)
\psplot{0}{3}{ch(x)}
\psplot{1}{4}{Argch(x)}
\psplot{0}{3}{x}
\end{pspicture*}
\subsection{Subsection}
\end{document}
The error message is as follows
(test.toc
! Missing control sequence inserted.
<inserted text> 
                \inaccessible 
l.2 ...group \special {ps: 0 setgray}Graphics}}{1}

 *File List*
 article.cls    2005/09/16 v1.4f Standard LaTeX document class
  size10.clo    2005/09/16 v1.4f Standard LaTeX file (size option)
   color.sty    2005/11/14 v1.0j Standard LaTeX Color (DPC)
   color.cfg    2007/01/18 v1.5 color configuration of teTeX/TeXLive
   dvips.def    1999/02/16 v3.0i Driver-dependant file (DPC,SPQR)
dvipsnam.def    1999/02/16 v3.0i Driver-dependant file (DPC,SPQR)
pstricks.sty    
pstricks-add.sty    2007/09/03 v. 0.11 package wrapper for pstricks-add.tex (hv
)
pstricks-add.tex    2008/10/13 v3.11 `PSTricks-add' (hv)
pst-xkey.tex    2005/11/25 v1.6 PSTricks specialization of xkeyval (HA)
 xkeyval.sty    2008/08/13 v2.6a package option processing (HA)
 xkeyval.tex    2008/08/13 v2.6a key=value parser (HA)
 ***********

      
I think that the problem is due to the coupling between xcolor, pstrciks-family and the \tableofcontents command
Cordialement
Azzam HASSAN


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