> That seems like a Claws bug (double free). Can you check if you have > the same error with the latest version? I am using 3.16.0 from: https://build.opensuse.org/package/users/server:mail/claws-mail There is no newer version for openSUSE Leap 42.3: https://bugzilla.opensuse.org/show_bug.cgi?id=1080550