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 Sun 05 Aug 2012 11:58:24 AM JST
gpg:                using RSA key 6DD8B963AD117A2E
gpg: Can't check signature: No public key
==> BAD/TAMPERED signature detected! <==