When I downloaded the tarball and installed manually I noticed that the the MANIFEST references a META.yml file, but the tarball doesn't include one. Perhaps this is somehow choking up CPAN? The 'make dist' command should generate a META.yml file for you.
I would ask on the cpan-discuss [1] list to see if you can get any guidance from the CPAN admins though. It might be totally unrelated to META.yml. //Ed [1] http://lists.cpan.org/showlist.cgi?name=cpan-discuss
