package python-oneconf 0.3.7 failed to install/upgrade: subprocess new pre-removal script returned error exit status 127

cant open software centre in ubuntu15.04

ProblemType: Package
DistroRelease: Ubuntu 15.04
Package: python-oneconf 0.3.7
ProcVersionSignature: Ubuntu 3.19.0-31.36-generic 3.19.8-ckt7
Uname: Linux 3.19.0-31-generic x86_64
ApportVersion: 2.17.2-0ubuntu1.5
Architecture: amd64
Date: Fri Oct 23 12:07:04 2015
DuplicateSignature: package:python-oneconf:0.3.7:subprocess new pre-removal script returned error exit status 127
ErrorMessage: subprocess new pre-removal script returned error exit status 127
InstallationDate: Installed on 2015-10-14 (8 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
PackageArchitecture: all
RelatedPackageVersions:
 dpkg 1.17.25ubuntu1
 apt 1.0.9.7ubuntu4.1
SourcePackage: oneconf
Title: package python-oneconf 0.3.7 failed to install/upgrade: subprocess new pre-removal script returned error exit status 127
UpgradeStatus: No upgrade log present (probably fresh install)