Installation Complete Restart Now Boot Hang

[Gene Soo]

Kubuntu 16.04 Daily Build. Installation Completes with Two Options.
Restart Now or Continue Testing. Selected Restart Now. Screen Goes black but machine fails to reboot.
Running as a VirtualBox Guest machine. Must Issue a restart in order to reboot machine.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubiquity 2.21.47 [modified: lib/partman/automatically_partition/question]
ProcVersionSignature: Ubuntu 4.4.0-11.26-generic 4.4.4
Uname: Linux 4.4.0-11-generic x86_64
ApportVersion: 2.20-0ubuntu3
Architecture: amd64
CasperVersion: 1.367
Date: Thu Mar 17 10:22:29 2016
ExecutablePath: /usr/lib/ubiquity/bin/ubiquity
InstallCmdLine: file=/cdrom/preseed/kubuntu.seed boot=casper maybe-ubiquity initrd=/casper/initrd.lz quiet splash --- maybe-ubiquity
InterpreterPath: /usr/bin/python3.5
LiveMediaBuild: Kubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160310)
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)