IO::Socket resulting in "Bad protocol 'tcp'" on Win2K

[Ikke]

I have a small perl script that seems to work on some Win2K machines
and to crash on others.

The error message is always:
Bad protocol 'tcp' when it fails to run

The code is:
my $socket = IO::Socket::INET->new ($Socket_type[0] =>
$Socket_type[1],
LocalAddr => '0.0.0.0',
LocalPort => $port,
Proto => 'tcp',
Listen => 10,
Reuse => 1
);
die "Could not create a server on port: $@\n" unless $socket;


I am using ActiveState's Perl 5.8 All computers are 100% identical
in terms of Perl installation