package pepperflashplugin-nonfree 1.7ubuntu1 failed to install/upgrade: package pepperflashplugin-nonfree is already installed and configured

[phooripun tibmuangma]

i have tried many times to install the plugin but it has seem like my attend was useless

ProblemType: Package
DistroRelease: Ubuntu 15.04
Package: pepperflashplugin-nonfree 1.7ubuntu1
ProcVersionSignature: Ubuntu 3.19.0-22.22-generic 3.19.8-ckt1
Uname: Linux 3.19.0-22-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.17.2-0ubuntu1.1
AptdaemonVersion: 1.1.1+bzr982-0ubuntu3.1
Architecture: amd64
CrashReports:
 600:0:118:604437:2015-07-17 09:39:56.248969078 +0700:2015-07-17 09:39:57.248969078 +0700:/var/crash/pepperflashplugin-nonfree.0.crash
 664:1000:118:0:2015-07-14 09:29:59.631499097 +0700:2015-07-14 09:29:59.631499097 +0700:/var/crash/_usr_bin_chromium-browser.1000.upload
 600:109:118:0:2015-07-14 09:30:05.203525922 +0700:2015-07-14 09:30:05.203525922 +0700:/var/crash/_usr_bin_chromium-browser.1000.uploaded
 640:1000:118:440908:2015-07-14 09:29:55.559484243 +0700:2015-07-14 09:29:59.779499811 +0700:/var/crash/_usr_bin_chromium-browser.1000.crash
Date: Fri Jul 17 09:39:57 2015
DuplicateSignature: package:pepperflashplugin-nonfree:1.7ubuntu1:package pepperflashplugin-nonfree is already installed and configured
ErrorMessage: package pepperflashplugin-nonfree is already installed and configured
InstallationDate: Installed on 2015-07-07 (10 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
RelatedPackageVersions:
 dpkg 1.17.25ubuntu1
 apt 1.0.9.7ubuntu4
SourcePackage: dpkg
Title: package pepperflashplugin-nonfree 1.7ubuntu1 failed to install/upgrade: package pepperflashplugin-nonfree is already installed and configured
UpgradeStatus: No upgrade log present (probably fresh install)