I've already created feedback id FB9647811 about this, but as there has been no response to that I was wondering if anyone else had experienced the same or found a fix. My extension was working until Monterey beta 7 but now it crashes with the following message: [MEDecodedMessage initWithData:securityInformation:]: unrecognized selector sent to instance According to the documentation this is the correct constructor.

I have a multipart message and in the MEMessageSecurityHandler.decodedMessage(forMessageData:) function call, I can access all of the headers of the email, but when I get to the body section, the actual content of the email is missing. I've dumped the data out to a file and can see that there is an X-Apple-Content-Length header been added, but the content of the multipart email --=-=W2HxPVXDSaWZZw=-= X-Apple-Content-Length: 11 Content-Type: application/pgp-encrypted --=-=W2HxPVXDSaWZZw=-= Content-Transfer-Encoding: 7Bit Content-Disposition: inline; filename=openpgp-encrypted-message.asc Content-Type: application/octet-stream; name="openpgp-encrypted-message.asc" X-Apple-Content-Length: 9608 --=-=W2HxPVXDSaWZZw=-=-- How can I access the content of these parts to decrypt the message?