strange dvi output

Hello,

 

I am trying to use prosper for my slides in LaTeX. I use WinEDT with
MikTex 2.4 and Yap 2.4 viewer. Installed is successfully, can execute
the file below with no errors, BUT - the output is the following: a
portrait page (instead of landscape), with slide background as it should
be (but rotated) and the body of the slides (title, etc.) appears not on
the page, but to the right of it, sort of as if on a "virtual" landscape
page adjacent to the "main" portrait one. 

 

Anyone knows what is wrong and how to fix it??

 

Many thanks, Anton. 

 

 

\documentclass{prosper}

\author{Trond Varslot}

\title{Prosper}

\date{December 2002}

\subtitle{A slide class for \LaTeX} \institution{Norwegian

University of Science and Technology} \email{[email protected]}

\begin{document}

\maketitle

\begin{slide}{Title}

... content ...

\end{slide}

\end{document}