This is actually a bug in the shell wrapper for Thunderbird. It strips the quotes from the command line that nautilus-sendto passes
** Package changed: nautilus-sendto (Ubuntu Oneiric) => thunderbird (Ubuntu Oneiric) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/757976 Title: Thunderbird attachment name changes cause send error To manage notifications about this bug go to: https://bugs.launchpad.net/nautilus-sendto/+bug/757976/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs