I'm tracking this down, slowly. I start to think it's an issue with the originating client. I'll update the list.

On Thu, Feb 18, 2016 at 11:18 PM, devotedmystic . <devotedmystic@gmail.com> wrote:
 Today I tested more extensively the latest gpg protocol modifications. To my surprise, while before everything seemed to work, I found new combinations that do not work.

 Now the gpg module seems more sensitive to its own protocol, but cannot decrypt successfully mail sent from other clients that it could do before.

Example: The following html mail asks for a decryption password, then displays this message, "This is an encrypted message and can not be displayed. Sorry!". The protocol is only slightly different from Enigma generated mails.


(HEADER)
X-Gpgit-Executed: True
Content-Type: multipart/encrypted; boundary="----------=_1455832935-3072-0"; protocol="application/pgp-encrypted"

This is a multi-part message in MIME format...

------------=_1455832935-3072-0
Content-Type: application/pgp-encrypted; name="msg.asc"
Content-Disposition: inline; filename="msg.asc"
Content-Transfer-Encoding: 7bit

Version: 1
------------=_1455832935-3072-0
Content-Type: application/octet-stream
Content-Disposition: inline
Content-Transfer-Encoding: 7bit

-----BEGIN PGP MESSAGE-----
Version: GnuPG v1
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=rLn8
-----END PGP MESSAGE-----

------------=_1455832935-3072-0--