texpower and pdfscreen incompatibility

Hello,

I'm using scrartcle, pdfscreen and texpower for my presentations.
Page layout ist done using the geometry package.

In the following example texpower seems to interfere with pdfscreen.
When including the texpower package, an additional margin appears
above the head. Though the log file says

\topmargin  -72.26999pt
\headheight 28.0pt
\headsep    6.0pt
\footskip   20.0pt

as they should.

Using only one of the packages texpower or pdfscreen at a time
the layout looks fine.

Any ideas what's wrong and how to fix this?

Best regards,
Stephan Hennig

---8<---example.tex---
\documentclass[14pt,pagesize]{scrartcl}
\usepackage[screen]{pdfscreen}
%\usepackage{texpower}

\usepackage[showframe]{geometry}
\geometry{paperheight=12cm,paperwidth=16cm}
\geometry{includeheadfoot}
\geometry{top=0mm,headheight=28pt,headsep=6pt}
\geometry{foot=20pt,bottom=14pt}

\usepackage[headinclude,footinclude]{scrpage2}
\pagestyle{scrheadings}
\setheadsepline{1pt}
\setfootsepline{1pt}

\begin{document}
first line
\vfill
last line gjpqy.
\chead{Head Middle}
\cfoot{Foot Middle}
\end{document}
--->8---example.tex---


---8<---example.log---
This is pdfTeX, Version 3.141592-1.10b (MiKTeX 2.2) (preloaded format=latex
2000.11.28)
 *File List*
scrartcl.cls    2003/01/31 v2.9n LaTeX2e KOMA document class
pdfscreen.sty    2000/07/07 v.1.5 screen PDF design (CVR)
texpower.sty    2003/05/15 v0.0.9d Create Dynamic Presentations with LaTeX.
geometry.sty    2002/07/08 v3.2 Page Geometry
--->8---example.log---






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