Installer crashes when installing grub

[Sean Davis]

Towards the end of the 15.10 installation, the installer crashes when installing grub2 on /dev/sda

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: ubiquity 2.21.27
ProcVersionSignature: Ubuntu 3.19.0-22.22-generic 3.19.8-ckt1
Uname: Linux 3.19.0-22-generic x86_64
ApportVersion: 2.17.3-0ubuntu4
Architecture: amd64
CasperVersion: 1.361
Date: Sat Jul 4 01:45:03 2015
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/xubuntu.seed boot=casper quiet splash ---
LiveMediaBuild: Xubuntu 15.10 "Wily Werewolf" - Alpha amd64 (20150703)
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)

[Phillip Susi (psusi)]

Did you use the manual partitioning option? If so, how did you disposition the EFI system partition? Can you run df at the time of this error and post the results?

[Launchpad Janitor (janitor)]

[Expired for grub-installer (Ubuntu) because there has been no activity for 60 days.]