package squid3 3.3.8-1ubuntu6.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[Skip Franklin]

Setting up squid3 (3.3.8-1ubuntu6.1) ...
Creating Squid HTTP proxy 3.x spool directory structure
2014/09/22 14:48:06| aclParseAclLine: ACL 'manager' already exists with different type.
FATAL: Bungled /etc/squid3/squid.conf line 694: acl manager proto cache_object
Squid Cache (Version 3.3.8): Terminated abnormally.
CPU Usage: 0.020 seconds = 0.000 user + 0.020 sys
Maximum Resident Size: 17936 KB
Page faults with physical i/o: 43
dpkg: error processing package squid3 (--configure):
 subprocess installed post-installation script returned error exit status 1
dpkg: dependency problems prevent configuration of squid:
 squid depends on squid3 (= 3.3.8-1ubuntu6.1); however:
  Package squid3 is not configured yet.

ProblemType: Package
DistroRelease: Ubuntu 14.04
Package: squid3 3.3.8-1ubuntu6.1
ProcVersionSignature: Ubuntu 3.2.0-67.101-generic 3.2.60
Uname: Linux 3.2.0-67-generic i686
ApportVersion: 2.14.1-0ubuntu3.4
Architecture: i386
Date: Mon Sep 22 14:22:53 2014
DuplicateSignature: package:squid3:3.3.8-1ubuntu6.1:subprocess installed post-installation script returned error exit status 1
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationDate: Installed on 2011-06-02 (1207 days ago)
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
SourcePackage: squid3
Title: package squid3 3.3.8-1ubuntu6.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: Upgraded to trusty on 2014-09-22 (0 days ago)
mtime.conffile..etc.squid3.squid.conf: 2013-03-01T15:23:25.269691