installation of grub2 failed ... amd64 version final beta

[Wild Rain]

using the final beta version of the AMD64 .ISO ... error came back stating installation of grub2 failed and it's a fatal error

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubiquity 2.17.10 [modified: lib/partman/automatically_partition/question]
ProcVersionSignature: Ubuntu 3.13.0-19.40-generic 3.13.6
Uname: Linux 3.13.0-19-generic x86_64
ApportVersion: 2.13.3-0ubuntu1
Architecture: amd64
CasperVersion: 1.339
Date: Tue Apr 15 19:58:48 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" - Beta amd64 (20140326)
ProcEnviron:
 TERM=linux
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)