installer crash during grub

[Kevin]

I have an Acer Aspire S7-391 running Windows 8.1.

I partitioned 1 GB for EFI, 4 GB for swag and 10 GB for the Ubuntu installation. When I attempt to install Ubuntu 14.04.01 off a flash drive, the installer crashes when it comes to installing grub. Do I need different partitions or to partition my hard drive differently?

Thanks

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubiquity 2.18.8
ProcVersionSignature: Ubuntu 3.13.0-32.57-generic 3.13.11.4
Uname: Linux 3.13.0-32-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
CasperVersion: 1.340
Date: Mon Aug 18 17:45:50 2014
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/ubuntu.seed cdrom-detect/try-usb=true persistent noprompt floppy.allowed_drive_mask=0 ignore_uuid boot=casper only-ubiquity quiet splash --
LiveMediaBuild: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

[Kevin (kevinqjin)]

I have also disabled Secure Boot and turned off Fast Startup on Windows 8.1