[pstricks] pst-3dplot and beamer

[Doris Behrendt]

hi list,

I want to use pst-3dplot in a beamer presentation, but if I change the following minimal example from article to beamer, it stops working;

any suggestions???

\documentclass[ngerman]{article}
%\documentclass[ngerman]{beamer}
\usepackage{babel}
\usepackage{pstricks}
\usepackage{pst-3dplot,pst-plot,pst-grad,pst-node}
\usepackage{pstricks-add}

\begin{document}

%\begin{frame}
\psframebox{ \begin{pspicture}(-5,-2.5)(5,2.5)
\rput(0,0){huhu?}
\end{pspicture}}
%\end{frame}
\end{document}


thanx in advance
doris