Perl cgi variables now returning on both post and get

I am running activeperl for cgi and just upgraded my server. My old perl version is 5.8.0, my new version is 5.8.8.820. In my perl script, I am collecting some variables sent my the browser and then writing them out to 2 files. I have not changed the script. My old script used to return the query string variables in the param() loop, but the new one does not sometimes. I suspect it is when the method is post it is doing this, but not sure.
Here is my script:
#!c:/perl/bin/perl.exe
##
{
use CGI qw/:standard/;
#
$bfile="c:\\TEMP\\UPLOAD\\$$.env";
open (UPLOAD,">$bfile") || Error ();
            print UPLOAD "QUERY_STRING=",$ENV{"QUERY_STRING"},"\n";
            print UPLOAD "HTTP_COOKIE=",$ENV{"HTTP_COOKIE"},"\n";
            print UPLOAD "SERVER_NAME=",$ENV{"SERVER_NAME"},"\n";
            print UPLOAD "PATH_INFO=",$ENV{"PATH_INFO"};
close (UPLOAD);      
$bfile="c:\\TEMP\\UPLOAD\\$$.qry";
open (UPLOAD,">$bfile") || Error ();
foreach my $name (param()){
  print UPLOAD "\n";
  $value = param($name);
  $value =~ s/\r/%FD/g;
  $value =~ s/\n//g;
  print UPLOAD $name,"=",$value;
 }
close (UPLOAD);      
  chdir 'c:\LINK' or die 'Bad directory';
  my $file = `udt LINK.GO $$ PREMIERE`;
  $file =~ s/.*?(Content.*)$/$1/gsi;
  print "$file\n";

}

I am far from a perl expert. This is what I threw together a while ago and has worked up until now. Any suggestions?
Also, my new server is running windows 2003 server enterprise edition, and my old server was running windows 2000 advanced server.

Thanks, Troy