Errors

meta_yml_conforms_to_known_spec

License 'gplv2' is invalid (license) [Validation: 1.4]

valid_signature

Old SIGNATURE detected. Please inform the module author to regenerate SIGNATURE using Module::Signature version 0.82 or newer.
gpg: Signature made Fri 07 Feb 2014 03:51:17 AM JST
gpg:                using DSA key 31F9562596406EA0
gpg: Can't check signature: No public key
==> BAD/TAMPERED signature detected! <==