package p7zip 9.20.1~dfsg.1-4 failed to install/upgrade: package is in a very bad inconsistent state; you should reinstall it before attempting configuration

the operating system continues to crash anytime i boot my system

ProblemType: Package
DistroRelease: Ubuntu 14.04
Package: p7zip 9.20.1~dfsg.1-4
ProcVersionSignature: Ubuntu 3.13.0-45.74-generic 3.13.11-ckt13
Uname: Linux 3.13.0-45-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.6
Architecture: amd64
Date: Mon Mar 23 18:47:41 2015
DpkgHistoryLog:
 Start-Date: 2015-03-23 18:46:16
 Commandline: apt-get install oracle-java8-set-default
 Install: oracle-java8-installer:amd64 (8u40+8u33arm-1~webupd8~0, automatic), gsfonts-x11:amd64 (0.22, automatic), oracle-java8-set-default:amd64 (8u40+8u33arm-1~webupd8~0)
DuplicateSignature: package:p7zip:9.20.1~dfsg.1-4:package is in a very bad inconsistent state; you should reinstall it before attempting configuration
ErrorMessage: package is in a very bad inconsistent state; you should reinstall it before attempting configuration
InstallationDate: Installed on 2015-01-02 (80 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
SourcePackage: p7zip
Title: package p7zip 9.20.1~dfsg.1-4 failed to install/upgrade: package is in a very bad inconsistent state; you should reinstall it before attempting configuration
UpgradeStatus: No upgrade log present (probably fresh install)