[pstricks] pst-3dplot -- \pst at linetype undefined

[Mirko Lukic]

While testing pst-3dplot package by Herbert Voss,
the following message reoccurs:
 
! Undefined control sequence.
\psls at dashed ...ashadjust \psk at dash \pst at linetype 
                                                  \space \tx at DashLine
\else ...
l.8   \pstThreeDDot(-1,1,1)

 
The test file is from pst-3dplot-doc.pdf
 
\listfiles
\documentclass{article}
\usepackage{pst-3dplot}
\begin{document}
  \begin{pspicture}(-2,-2)(2,2)\psgrid
  \pstThreeDCoor[xMin=-2,xMax=2,yMin=-2,yMax=2,zMin=-2,zMax=2]
  \psset{dotstyle=*,dotscale=2,linecolor=red,drawCoor=true}
  \pstThreeDDot(-1,1,1)
  \pstThreeDDot(1.5,-1,-1)
  \end{pspicture}
\end{document}
 
 
Can someone explain why I am getting this error?
 
ml
 
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