package libunity9 7.1.4+16.04.20160701-0ubuntu1 failed to install/upgrade: trying to overwrite shared '/usr/bin/unity-scope-loader', which is different from other instances of package libunity9:i386

[Tanya Underwood]

I don't know what's going on. All I know is that I'm trying to install some programs to Ubuntu and it isn't working. I tried the apt-get install -f to no avail. I'm trying to install the Chrome browser from Google and Tetravex plus some updates and they won't install. I'm new to Ubuntu and wanted to try it out as an alternative to Windows.

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: libunity9 7.1.4+16.04.20160701-0ubuntu1
ProcVersionSignature: Ubuntu 4.4.0-31.50-generic 4.4.13
Uname: Linux 4.4.0-31-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
Date: Sat Jul 23 13:35:07 2016
DuplicateSignature:
 package:libunity9:7.1.4+16.04.20160701-0ubuntu1
 Unpacking libperl5.22:i386 (5.22.1-9) ...
 dpkg: error processing archive /var/cache/apt/archives/libperl5.22_5.22.1-9_i386.deb (--unpack):
  trying to overwrite shared '/usr/share/doc/libperl5.22/changelog.Debian.gz', which is different from other instances of package libperl5.22:i386
ErrorMessage: trying to overwrite shared '/usr/bin/unity-scope-loader', which is different from other instances of package libunity9:i386
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.1
 apt 1.2.12~ubuntu16.04.1
SourcePackage: libunity
Title: package libunity9 7.1.4+16.04.20160701-0ubuntu1 failed to install/upgrade: trying to overwrite shared '/usr/bin/unity-scope-loader', which is different from other instances of package libunity9:i386
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

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

[Justin Case (justincase)]

I note that running the following and restarting Ubuntu 16.04 LTS will fix the problem, having *just* installed the Chrome (63.0.3239.132) browser and immediately getting the panic regarding libunity9:

```
$ sudo apt-get install --reinstall libunity9
```

Presumably Chrome is the problem here. It likely overwrites the stable version.