attempting to install from a bootable usb drive. Asus bios, UEFI mode

[Paul]

Error message during install, something about installing grub dummy. message was "This is a fatal error"

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubiquity 2.17.7
ProcVersionSignature: Ubuntu 3.13.0-8.28-generic 3.13.2
Uname: Linux 3.13.0-8-generic x86_64
ApportVersion: 2.13.2-0ubuntu4
Architecture: amd64
CasperVersion: 1.337
Date: Wed Feb 19 19:57:46 2014
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/ubuntu.seed boot=casper only-ubiquity quiet splash --
LiveMediaBuild: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140215)
ProcEnviron:
 LANGUAGE=en_NZ.UTF-8
 TERM=linux
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_NZ.UTF-8
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)