package git-man 1:2.5.0-1ubuntu0.2 failed to install/upgrade: package git-man is already installed and configured

[shubham]

i am unable to download any software from software centre ,and the error is coming regarding config matlab-support and its pathetic to solve it..

ProblemType: Package
DistroRelease: Ubuntu 15.10
Package: git-man 1:2.5.0-1ubuntu0.2
ProcVersionSignature: Ubuntu 4.2.0-37.43-generic 4.2.8-ckt10
Uname: Linux 4.2.0-37-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.19.1-0ubuntu5
AptdaemonVersion: 1.1.1+bzr982-0ubuntu14
Architecture: amd64
Date: Mon Jul 18 01:17:32 2016
Dependencies:

DuplicateSignature: package:git-man:1:2.5.0-1ubuntu0.2:package git-man is already installed and configured
ErrorMessage: package git-man is already installed and configured
InstallationDate: Installed on 2016-03-07 (133 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
PackageArchitecture: all
RelatedPackageVersions:
 dpkg 1.18.2ubuntu5.1
 apt 1.0.10.2ubuntu3
SourcePackage: dpkg
Title: package git-man 1:2.5.0-1ubuntu0.2 failed to install/upgrade: package git-man is already installed and configured
UpgradeStatus: Upgraded to wily on 2016-03-13 (128 days ago)