Created attachment 1692 [details] Screen capture of the error message. Claws Mail version 3.14.1 Windows 10 PRO, version 1607, 64-bit operating system I am unable to sign mail. Once upon a time, using the older 32 bit version, I could sign mail. I have attached a copy of a screen capture of the error message.
Hm, this is caused by me mistakenly thinking that the fix for issue <https://bugs.gnupg.org/gnupg/issue2814> was included in the GPGME version bundled in this release. Sorry about that, I will prepare a new release (3.14.1-2) tomorrow, with this fixed. In the meantime, GPG should work in the 32-bit version.
(In reply to comment #1) Thanks :)