package shim-signed 1.27~16.04.1+0.9+1474479173.6c180c6-1ubuntu1 failed to install/upgrade: package shim-signed is already installed and configured

trying to install intel proprietary driver via the sw & updates dialog window

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: shim-signed 1.27~16.04.1+0.9+1474479173.6c180c6-1ubuntu1
ProcVersionSignature: Ubuntu 4.8.0-46.49~16.04.1-generic 4.8.17
Uname: Linux 4.8.0-46-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.5
AptdaemonVersion: 1.1.1+bzr982-0ubuntu14
Architecture: amd64
CrashReports:
 600:0:114:523487:2017-04-22 15:17:01.690313577 +0800:2017-04-22 15:17:02.690313577 +0800:/var/crash/shim-signed.0.crash
 600:0:114:523496:2017-04-22 15:17:02.682315772 +0800:2017-04-22 15:17:02.646325251 +0800:/var/crash/flashplugin-installer.0.crash
 640:1000:114:75877:2017-04-22 12:23:04.261991756 +0800:2017-04-22 14:12:09.378383222 +0800:/var/crash/_usr_bin_update-manager.1000.crash
Date: Sat Apr 22 15:17:02 2017
DuplicateSignature:
 package:shim-signed:1.27~16.04.1+0.9+1474479173.6c180c6-1ubuntu1
 Processing triggers for man-db (2.7.5-1) ...
 dpkg: error processing package flashplugin-installer (--configure):
  package flashplugin-installer is already installed and configured
ErrorMessage: package shim-signed is already installed and configured
InstallationDate: Installed on 2017-04-11 (10 days ago)
InstallationMedia: Ubuntu-GNOME 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215)
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.1
 apt 1.2.19
SourcePackage: dpkg
Title: package shim-signed 1.27~16.04.1+0.9+1474479173.6c180c6-1ubuntu1 failed to install/upgrade: package shim-signed is already installed and configured
UpgradeStatus: No upgrade log present (probably fresh install)