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It gives me error while compiling.... the G is good, is there another way to put the logo at the lower right of the page?

\documentclass[latin1,english,9pt,trans]{beamer}

\mode<presentation>
{
\usetheme{Warsaw}
% or ...
\setbeamercolor{title}{fg=white,bg=white!20!orange}
\setbeamercolor{structure}{fg=white!20!orange}

\setbeamercovered{transparent}
% or whatever (possibly just delete it)
}

\frenchspacing ...

Hi!! Sure!
I am used beamer class, mode presentation.
Here is a sample:

\documentclass[latin1,english,9pt,trans]{beamer}

\mode<presentation>
{
\usetheme{Warsaw}
% or ...
\setbeamercolor{title}{fg=white,bg=white!20!orange}
\setbeamercolor{structure}{fg=white!20!orange}

\setbeamercovered ...

Hi everybody,
Does anyone know how to make sure that a command such as

\logo{\includegraphics[height=0.7 cm]{RogersLogo.png}}

correctly overlaps any possible other stuff that come into the logo area at the bottom of the page? The file is a transparent PNG btw.
If I find out I can avoid use Power ...