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 Mon 12 May 2014 07:21:04 PM JST
gpg:                using RSA key 0C09AFF4D2CB6091
gpg: Can't check signature: No public key
==> BAD/TAMPERED signature detected! <==