I had the same problem. It appears to occur when trying to upgrade update-manager while scrollkeeper update is running.
-- package update-manager 1:0.87.24 failed to install/upgrade: subprocess post-installation script returned error exit status 134 https://bugs.launchpad.net/bugs/225504 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs