I am not sure, but there may be a problem with CGI::Session. When I did a query on it, it said to contact the author. When I tried to install it through CPAN, I got this:

cpan> install CGI::Session
Running install for module CGI::Session

  The module CGI::Session isn't available on CPAN.

  Either the module has not yet been uploaded to CPAN, or it is
  temporary unavailable. Please contact the author to find out
  more about the status. Try 'i CGI::Session'.
[download]

You may want to contact the modules author.

"The social dynamics of the net are a direct consequence of the fact that nobody has yet developed a Remote Strangulation Protocol." -- Larry Wall