This issue occured after installing tidy5 which is not currently available in the apt sources list. I installed it by running this script: https://gist.github.com/cam8001/46bf8c2f2bf8708054fc
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to tidy in Ubuntu. https://bugs.launchpad.net/bugs/1537570 Title: package libtidy-0.99-0 (not installed) failed to install/upgrade: trying to overwrite '/usr/lib/libtidy.so', which is also in package tidy 5.1.25 Status in tidy package in Ubuntu: Confirmed Bug description: did use SW manager to un - install tidy 5 but now this. ProblemType: Package DistroRelease: Ubuntu 15.10 Package: libtidy-0.99-0 (not installed) ProcVersionSignature: Ubuntu 4.2.0-25.30-generic 4.2.6 Uname: Linux 4.2.0-25-generic x86_64 ApportVersion: 2.19.1-0ubuntu5 Architecture: amd64 Date: Mon Jan 25 09:31:01 2016 DuplicateSignature: package:libtidy-0.99-0:(not installed):trying to overwrite '/usr/lib/libtidy.so', which is also in package tidy 5.1.25 ErrorMessage: trying to overwrite '/usr/lib/libtidy.so', which is also in package tidy 5.1.25 InstallationDate: Installed on 2015-08-29 (148 days ago) InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422) RelatedPackageVersions: dpkg 1.18.2ubuntu5.1 apt 1.0.10.2ubuntu1 SourcePackage: tidy Title: package libtidy-0.99-0 (not installed) failed to install/upgrade: trying to overwrite '/usr/lib/libtidy.so', which is also in package tidy 5.1.25 UpgradeStatus: Upgraded to wily on 2015-10-30 (86 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/tidy/+bug/1537570/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
