[powerdot] `logocmd' and `logopos' undefined in families `global,glslide'

Dear list,
I tried to compile (under Debian Linux, powerdot class 1.2 provided by
'texlive-latex-recommended' package) this file:

\listfiles
\documentclass[clock]{powerdot}
\pdsetup{%
logopos={0,0},
logocmd={\includegraphics[height=.08\slideheight]{logo.eps}},
lf=left footer,
rf=right footer
}%
\begin{document}
\begin{slide}{First slide}
Some text.
\end{slide}
\end{document}


I got two errors:
! Package xkeyval Error: `logopos' undefined in families `global,glslide'.
! Package xkeyval Error: `logocmd' undefined in families `global,glslide'.

plus one warning:
LaTeX Warning: Unused global option(s):
   [clock].

The \listfiles tells that I meet the requirements specified in the
documentation:
xkeyval.sty    2006/11/18 v2.5f package option processing (HA)
xkeyval.tex    2006/11/18 v2.5f key=value parser (HA)
pstricks.sty    2004/05/12 v0.2l LaTeX wrapper for `PSTricks' (RN,HV)
pstricks.tex    2004/06/22 v1.04 `PSTricks' (tvz)
xcolor.sty    2005/12/21 v2.09 LaTeX color extensions (UK)
enumitem.sty    2004/07/19 v1.0 Customized lists


Where did I go wrong?

TIA,

--
Christian Facchini

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