Errors

valid_signature
Old SIGNATURE detected. Please inform the module author to regenerate SIGNATURE using Module::Signature version 0.82 or newer.
gpg: Signature made Sat 23 Aug 2014 10:00:04 PM JST
gpg:                using RSA key 0C1AF9C7F874B05A
gpg: Can't check signature: No public key
==> BAD/TAMPERED signature detected! <==