LWP cookies

Dear all,

I have troubles to download PDF file from www3.interscience.wiley.com
due to the cookie problem and the server complains like
"An error has occured because we were unable to send a cookie to your  
web browser".
But I do use HTTP::Cookies. Please check the following for the  
related code

     my $ua = new LWP::UserAgent::FramesReady;
     $ua->agent('Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en- 
US; rv:1.9.2) Gecko/20100115 Firefox/3.6');
     my $header = HTTP::Headers->new;
     $header->header(Accept => "text/html,application/xhtml 
+xml,application/xml;q=0.9,*/*;q=0.8");
     my $cookie_jar = HTTP::Cookies->new(
         file => "$ENV{HOME}/lwpcookies.txt",
         autosave => 1,
         ignore_discard => 0);
     $ua->cookie_jar($cookie_jar);
     $ua->default_headers ;
     my $request = new HTTP::Request('GET', $url, $header);
     $cookie_jar->add_cookie_header( $request );
     my $response = $ua->request($request);

Also, when I fetch the URL http://www3.interscience.wiley.com/cgi-bin/ 
showEnv
with the above code. The HTTP_COOKIE content is missing, which shows
a problem of cookie acceptance.

Any solution is appreciated.

Thank you so much for your consideration.

Sincerely,
Yun-an