Lubuntu installer crashed while installing from a USB drive to another

[Nathan]

Used Rufus to create a bootable Lubuntu installer on a 16GB SanDisk Ultra Fit USB 3.0 drive.
Booted into live mode on the USB.
Ran installer, which informed me it needed to change my system out of secure boot mode.
Ran installer on 32GB drive of the same type.
Removed existing partition and created an ext4 partition and 2GB swap partition on the drive, selecting root to install the OS and the same drive for Grub (I want to use this drive as a portable Lubuntu install). I followed the guide at http://askubuntu.com/questions/450354.

ProblemType: Bug
DistroRelease: Ubuntu 16.10
Package: ubiquity 16.10.14
ProcVersionSignature: Ubuntu 4.8.0-22.24-generic 4.8.0
Uname: Linux 4.8.0-22-generic x86_64
ApportVersion: 2.20.3-0ubuntu8
Architecture: amd64
CasperVersion: 1.379
Date: Wed Nov 9 22:39:51 2016
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/lubuntu.seed boot=casper quiet splash ---
LiveMediaBuild: Lubuntu 16.10 "Yakkety Yak" - Release amd64 (20161012.1)
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)