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 Fri 21 Apr 2006 11:06:37 PM JST
gpg:                using DSA key 642BA2984E758317
gpg: Can't check signature: No public key
--- SIGNATURE Fri Apr 21 23:06:37 2006
+++ 
@@ -1,6 +1,6 @@
 SHA1 9ec0d021cf2970d9dc0908489d3fc30427e405d3 Changes
 SHA1 0d9e497c81e9f54e44a7d1ff000ddc67bb4d9d8c MANIFEST
-SHA1 9f3339ed048b3473e92812aede9e41691b916194 META.yml
+SHA1 29bf3147fbd7d28f80c432c4859bf87011de663f META.yml
 SHA1 be51e46f172f7b5e4eca0575f362c8871870eaab Makefile.PL
 SHA1 2d67f9ed0ad5224c80538b19d9a9ec6cdf6b4834 README
 SHA1 4af23207294f7e338deb3efbcf968e2a441e5e6f lib/Math/SymbolicX/Error.pm
==> MISMATCHED content between SIGNATURE and distribution files! <==