Installer Crashes while running post installation script

[dvirusd]

After the entire installation is complete. The installer crahed while running post installation script.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubiquity 2.18.8.2
ProcVersionSignature: Ubuntu 3.13.0-36.63-generic 3.13.11.6
Uname: Linux 3.13.0-36-generic i686
ApportVersion: 2.14.1-0ubuntu3.5
Architecture: i386
CasperVersion: 1.340
Date: Sat Oct 25 15:49:17 2014
InstallCmdLine: file=/cdrom/preseed/backbox.seed boot=casper initrd=/casper/initrd.gz quiet splash vga=791 -- BOOT_IMAGE=/casper/vmlinuz
LiveMediaBuild: BackBox Linux 4.0 - Release i386
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

[Ubuntu Foundations Team Bug Bot (crichton)]

Exception during installation:
Oct 25 13:47:56 backbox /plugininstall.py: SystemError: E:Sub-process /usr/bin/dpkg returned an error code (1)
Oct 25 13:47:56 backbox /plugininstall.py:

[Marcus Tomlinson (marcustomlinson)]

This release of Ubuntu is no longer receiving maintenance updates. If this is still an issue on a maintained version of Ubuntu please let us know.

[Launchpad Janitor (janitor)]

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