The permissions on the ~/.gnupg directory were already set to 0700:

[jimk] 503 $ ls -al  
total 464
...
drwx------     8 jimk  jimk     272 28 Jan 12:52 .gnupg
[download]

The permissions on ~/.gnupg/gpg.conf were 0644; I changed them to 0600:

[.gnupg] 512 $ ll
total 56
-rw-------  1 jimk  jimk  8084 28 Jan 12:33 gpg.conf
[download]

I re-ran the cpan shell for Email::Send. Same results. I got the same results when I took the suggestion about removing /Users/jimk/.cpan/sources/authors/id/C/CW/CWEST/CHECKSUMS and then re-called install Send::Easy.

Note: The error messages refer to unsafe ownership on gpg.conf:

gpg: WARNING: unsafe ownership on configuration file `/Users/jimk/.gnu
+pg/gpg.conf'
[download]

Since 'jimk' rather than 'root' is the owner of gpg.conf, could that be the problem? (Well, I doubt it, I tried changing the ownership of that file to root, reran the shell, and again failed.)

More thoughts? Thanks.

jimk