package libxfce4panel-2.0-4 4.12.0-3ubuntu2 failed to install/upgrade: trying to overwrite '/usr/lib/x86_64-linux-gnu/xfce4/panel/wrapper-2.0', which is also in package xfce4-panel 4.12.0-0ubuntu1

[Cavsfan]

Got this upon booting into the system.

ProblemType: Package
DistroRelease: Ubuntu 15.10
Package: libxfce4panel-2.0-4 4.12.0-3ubuntu2
ProcVersionSignature: Ubuntu 4.2.0-7.7-generic 4.2.0
Uname: Linux 4.2.0-7-generic x86_64
ApportVersion: 2.18.1-0ubuntu1
Architecture: amd64
Date: Sun Sep 13 18:30:03 2015
DuplicateSignature: package:libxfce4panel-2.0-4:4.12.0-3ubuntu2:trying to overwrite '/usr/lib/x86_64-linux-gnu/xfce4/panel/wrapper-2.0', which is also in package xfce4-panel 4.12.0-0ubuntu1
ErrorMessage: trying to overwrite '/usr/lib/x86_64-linux-gnu/xfce4/panel/wrapper-2.0', which is also in package xfce4-panel 4.12.0-0ubuntu1
InstallationDate: Installed on 2015-09-13 (0 days ago)
InstallationMedia: Xubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422.1)
RelatedPackageVersions:
 dpkg 1.18.2ubuntu3
 apt 1.0.9.10ubuntu6
SourcePackage: xfce4-panel
Title: package libxfce4panel-2.0-4 4.12.0-3ubuntu2 failed to install/upgrade: trying to overwrite '/usr/lib/x86_64-linux-gnu/xfce4/panel/wrapper-2.0', which is also in package xfce4-panel 4.12.0-0ubuntu1
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[kelargo (kelong-2000)]

I got this error, upgrading from 15.04 to 15.10.
any info I can contribute?

[John Pyper (jpyper)]

Upgrading from 15.04 to 15.10.

This issue is present in the i386 builds as well.

If I can be of assistance, please let me know. Thank you.

[Theo Linkspfeifer (lastonestanding)]

The file wrapper-2.0 was moved from xfce4-panel to the new libxfce4panel-2.0-4 package, and that seems to have triggered this conflict during upgrades from earlier releases to 15.xx/16.04.