[pstricks] problem after changing from openSUSE 11.3 to 11.4

[Christian Maurer]

Dear Herbert Voß,

after just having updated openSUSE from 11.3 to 11.4,
my book on mathematics does not compile any more under AmSTeX.
I minimized the problem and found out the following:

A file with the content

\input pstricks
\input pst-node
\input graphicx
\psset{fillcolor=lightgray,nodesep=3pt,labelsep=3pt,linewidth=0.2pt,arrows=->}
\bye

called with "amstex <file>" went through with no problems
at all until pstricks.tex file-version 1.29, 2009/05/19;
but now, with pstricks.tex file-version 2.08, 2010/06/06,
yields "xkeyval error: [ undefined".

Any help is welcome.

Mit besten Grüßen,

Ch. Maurer
-- 
Dr. Christian Maurer          Leiter LWB Mathematik / Informatik
FB Mathematik und Informatik            Freie Universität Berlin
Tel. 838 75 215, 214 78 530           http://lwb.mi.fu-berlin.de