Most likely, a ^Z is "hidden" in your data, which makes Perl under Win32 stop reading the file. The remedy (and always good practice) would be to use binmode before reading from the file :

use strict; use warnings;
open (FH, "save.htm") or die "Couldn't open 'save.htm' : $!";
binmode FH;
while (<FH>) {
    print $., $_;
}
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perl -MHTTP::Daemon -MHTTP::Response -MLWP::Simple -e ' ;    # The  
$d = new HTTP::Daemon and fork and getprint $d->url and exit;#spider
($c = $d->accept())->get_request(); $c->send_response( new   #in the
HTTP::Response(200,$_,$_,qq(Just another Perl hacker\n))); ' #  web
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