package libdmtx0a:i386 0.7.4-2 failed to install/upgrade: package libdmtx0a:i386 is already installed and configured

[Sultan Ahmed]

I can't install calendar

ProblemType: Package
DistroRelease: Ubuntu 15.10
Package: libdmtx0a:i386 0.7.4-2
ProcVersionSignature: Ubuntu 4.2.0-42.49-generic 4.2.8-ckt12
Uname: Linux 4.2.0-42-generic i686
ApportVersion: 2.19.1-0ubuntu5
AptdaemonVersion: 1.1.1+bzr982-0ubuntu14
Architecture: i386
Date: Thu Nov 17 11:38:10 2016
Dependencies:
 gcc-5-base 5.2.1-22ubuntu2
 libc6 2.21-0ubuntu4.3
 libgcc1 1:5.2.1-22ubuntu2
 multiarch-support 2.21-0ubuntu4.3
DuplicateSignature: package:libdmtx0a:i386:0.7.4-2:package libdmtx0a:i386 is already installed and configured
ErrorMessage: package libdmtx0a:i386 is already installed and configured
InstallationDate: Installed on 2015-12-08 (344 days ago)
InstallationMedia: Lubuntu 15.10 "Wily Werewolf" - Release i386 (20151021)
RelatedPackageVersions:
 dpkg 1.18.2ubuntu5.1
 apt 1.0.10.2ubuntu3
SourcePackage: libdmtx
Title: package libdmtx0a:i386 0.7.4-2 failed to install/upgrade: package libdmtx0a:i386 is already installed and configured
UpgradeStatus: No upgrade log present (probably fresh install)