beamer 3.01 and rowcolors (after year 2007)

% see http://osdir.com/ml/tex.latex.beamer.general/2005-06/msg00011.html
\documentclass[12pt, slidestop, mathserif, compress, xcolor=table, dvips]{beamer} %% show comment, works!!
% xcolor=table needed to be added, otherwise, rowcolors=... will have error.

beamer

In Sept.2, 2008, install Latex in Ubuntu, need to use
sudo apt-get install texlive tetex-base tetex-bin tetex-extra

To handle error
Option clash for package pstricks

remove line
\usepackage{pstcol}
which will clash with \usepackage{pstricks}

To handle error
Undefined control sequence \pst@usecolor

Change from

\documentclass[12pt, slidestop, Palatino, mathserif, compress, xcolor=pst, dvips]{beamer}

to
\documentclass[12pt, slidestop, Palatino, mathserif, compress, dvips]{beamer}

That is, get rid of the option xcolor=pst (predicted by Dr. Oporowski when I used xcolor=pst as a pad to fix the problem)