@wroot, if you more carefully read my post of 2016-06-28 01:49:32 PDT you will see that my workaround does not only prevent an error message, but also does enable removing attachments.
I also indicated a sloppiness in TB's way of detecting that a message is signed (when determining whether it allows to remove attachments). The whole issue could have been solved pretty easily already some ten years ago, but like with most other reported bugs/problems, nobody actually takes it up. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to thunderbird in Ubuntu. https://bugs.launchpad.net/bugs/303140 Title: No more "Save all" / "detach all" / "delete all" for attachments Status in Mozilla Thunderbird: Confirmed Status in thunderbird package in Ubuntu: Confirmed Bug description: Binary package hint: thunderbird After receiving an email with more than one attachment, I have to open/detach/save them one by one, cause "Save all" / "detach all" / "delete all" in the GUI are not available This happens since version 2.0.0.18 1) Description: Ubuntu 8.04.1 Release: 8.04 User-Agent: Thunderbird 2.0.0.18 (X11/20081125) MIME-Version: 1.0 2) Package: Linux-Mint 5 3) "Save all" / "detach all" / "delete all" available when right- klicking on an attachment 4 )"Save all" / "detach all" / "delete all" greyed out, so not available ProblemType: Bug Architecture: i386 Date: Fri Nov 28 11:34:16 2008 DistroRelease: Ubuntu 8.04 NonfreeKernelModules: wl fglrx Package: mozilla-thunderbird 2.0.0.18+nobinonly-0ubuntu0.8.04.1 PackageArchitecture: all ProcEnviron: PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/bin/X11:/usr/games LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: thunderbird Uname: Linux 2.6.24-21-generic i686 To manage notifications about this bug go to: https://bugs.launchpad.net/thunderbird/+bug/303140/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp