Steam will not install. I tried purging it then re-installing... i get the license and accept but still says I declined

[Joshua Rosen]

Description: Ubuntu 16.04.3 LTS
Release: 16.04

apt-cache policy steam
steam:i386:
  Installed: (none)
  Candidate: 1:1.0.0.48-1ubuntu4
  Version table:
     1:1.0.0.48-1ubuntu4 500
        500 http://us.archive.ubuntu.com/ubuntu xenial-updates/multiverse i386 Packages
        100 /var/lib/dpkg/status
     1:1.0.0.48-1ubuntu3 500
        500 http://us.archive.ubuntu.com/ubuntu xenial/multiverse i386 Packages

Steam should be installing after I accept the license agreement

It keeps saying it was declined. I found a site saying I should purge then re-install.. that gets the agreement to come up, but when I accept it, it still says I decline.

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: steam:i386 (not installed)
ProcVersionSignature: Ubuntu 4.4.0-101.124-generic 4.4.95
Uname: Linux 4.4.0-101-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.13
AptOrdering:
 steam: Purge
 NULL: ConfigurePending
Architecture: amd64
Date: Sat Nov 25 22:49:56 2017
DpkgTerminalLog:
 Removing steam:i386 (1:1.0.0.48-1ubuntu4) ...
 Purging configuration files for steam:i386 (1:1.0.0.48-1ubuntu4) ...
 dpkg: error processing package steam:i386 (--purge):
  subprocess installed post-removal script returned error exit status 10
DuplicateSignature:
 package:steam:i386:(not installed)
 Purging configuration files for steam:i386 (1:1.0.0.48-1ubuntu4) ...
 dpkg: error processing package steam:i386 (--purge):
  subprocess installed post-removal script returned error exit status 10
ErrorMessage: subprocess installed post-removal script returned error exit status 10
InstallationDate: Installed on 2017-11-17 (8 days ago)
InstallationMedia: Ubuntu 14.04.5 LTS "Trusty Tahr" - Release amd64 (20160803)
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.2
 apt 1.2.24
SourcePackage: steam
Title: package steam:i386 (not installed) failed to install/upgrade: subprocess installed post-removal script returned error exit status 10
UpgradeStatus: Upgraded to xenial on 2017-11-17 (8 days ago)

[Andrew Hayzen (ahayzen)]

Thank you for taking the time to report this bug and helping to make Ubuntu better.

I think this is likely to be due to the debconf question for the steam license question not being answered correctly, this was dropped in the steam package version 1:1.0.0.54+repack-2ubuntu4 as not all software centre's support it. (Which will likely solve your bug). Therefore I am marking this bug as fix released.