Apparently something had left /usr/share/initramfs- tools/hooks/plymouth.orig and /usr/share/initramfs- tools/hooks/plymouth.orig~ files in my file system. Deleting these files let the update proceed. Possibly reassign to initramfs-tools, and possibly make those packages more robust to backup files in its directories.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/775554 Title: package linux-image-2.6.38-8-generic 2.6.38-8.42 failed to install/upgrade: ErrorMessage: sub process post installation script returned error code 2 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs