but the Params-Validate-0.95 modile dont have makefile.pl but there is build.pl so I run this file. I have the Validate.pm file located at C:\Perl\site\lib\Params folder in my machine. Also you mention "Do you have Params::Validate in your path?".. does this mean I have to update environment variable with some value.. and with what value?

What happens when you run the following script?

#!/usr/bin/perl
use strict;
use warnings;
use Params::Validate qw( validate validate_pos SCALAR );

print SCALAR, "\n";
[download]

And this one?

#!/usr/bin/perl
use strict;
use warnings;
use DateTime::Locale;

print "1\n";
[download]

When I run the first code I got following error message --
I save this code with name test.pl

Name "main::SCALAR" used only once: possible typo at test.pl line 6.
print() on unopened filehandle SCALAR at test.pl line 6.

And when I run another piece of code that time I got same error which is a subject line of this thread.