I have had the same issue with the most current version also, of course I was using active state Perl on windows so I just found another compiled version on the net and the install went fine. Since you are using cpan to install you could just use the force flag to install eventhough you fail the test. This is not the correct answer I know to the issue, but it will get the module installed. Also on a side note you may want to find out what version of ExtUtils is installed it may incompatible with the PM ( not sure on that one but have seen it in the past ).