package python-pkg-resources 18.4-1 failed to install/upgrade: subprocess new pre-removal script returned error exit status 127

[Steven]

It will not let me open ubuntu software center

ProblemType: Package
DistroRelease: Ubuntu 15.10
Package: python-pkg-resources 18.4-1
ProcVersionSignature: Ubuntu 4.2.0-22.27-generic 4.2.6
Uname: Linux 4.2.0-22-generic x86_64
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
Date: Wed Dec 23 01:45:00 2015
Dependencies:

DuplicateSignature: package:python-pkg-resources:18.4-1:subprocess new pre-removal script returned error exit status 127
ErrorMessage: subprocess new pre-removal script returned error exit status 127
InstallationDate: Installed on 2015-12-21 (2 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
PackageArchitecture: all
RelatedPackageVersions:
 dpkg 1.18.2ubuntu5.1
 apt 1.0.10.2ubuntu1
SourcePackage: python-setuptools
Title: package python-pkg-resources 18.4-1 failed to install/upgrade: subprocess new pre-removal script returned error exit status 127
UpgradeStatus: No upgrade log present (probably fresh install)