systemsettings crashed with AttributeError in save_printer(): 'cups.Connection' object has no attribute '_begin_operation'

I am unable to connect to my shared printer (Local to ubuntu) on my clients workstations (Windows 7) since the Ubuntu server upgrade to 12.04. I receive an error 0x00000003 on windows which suggests many possibilities, but as the server was the only thing to change I decided it must be that. I then looked in /var/lib/samba/ and noticed that all the nt*.tdb files had been renamed to nt*.tdb.bak for some reason, so I named them back again, restarted samba, but this had no effect. rpclient does recognise that the printer is there and so are the drivers. Cups reconises the printer and can print to it locally, any local application on ubuntu can print to the printer. I then decided to unshare the printer from system settings, I was hoping the then re-share them to see if this fixed the problem. This is where the error happened.

lsb_release -rd:
Description: Ubuntu precise (development branch)
Release: 12.04

apt-cache policy:
systemsettings:
  Installed: 4:4.8.0b-0ubuntu4
  Candidate: 4:4.8.0b-0ubuntu4
  Version table:
 *** 4:4.8.0b-0ubuntu4 0
        500 http://gb.archive.ubuntu.com/ubuntu/ precise/main amd64 Packages
        100 /var/lib/dpkg/status

samba:
  Installed: 2:3.6.3-1ubuntu1
  Candidate: 2:3.6.3-1ubuntu1
  Version table:
 *** 2:3.6.3-1ubuntu1 0
        500 http://gb.archive.ubuntu.com/ubuntu/ precise/main amd64 Packages
        100 /var/lib/dpkg/status

cups:
  Installed: 1.5.2-5
  Candidate: 1.5.2-5
  Version table:
 *** 1.5.2-5 0
        500 http://gb.archive.ubuntu.com/ubuntu/ precise/main amd64 Packages
        100 /var/lib/dpkg/status

foomatic-db:
  Installed: (none)
  Candidate: 20120212-1
  Version table:
     20120212-1 0
        500 http://gb.archive.ubuntu.com/ubuntu/ precise/main amd64 Packages

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: systemsettings 4:4.8.0b-0ubuntu4
ProcVersionSignature: Ubuntu 3.2.0-17.26-generic 3.2.6
Uname: Linux 3.2.0-17-generic x86_64
ApportVersion: 1.93-0ubuntu1
Architecture: amd64
CrashCounter: 1
Date: Thu Feb 23 17:28:54 2012
ExecutablePath: /usr/bin/systemsettings
ProcCmdline: /usr/bin/systemsettings -caption System\ Settings --icon preferences-system
ProcEnviron:
 LANGUAGE=en_GB:en
 PATH=(custom, no user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: kde-workspace
Title: systemsettings crashed with AttributeError in save_printer(): 'cups.Connection' object has no attribute '_begin_operation'
UpgradeStatus: Upgraded to precise on 2012-02-18 (5 days ago)
UserGroups: adm admin cdrom dialout fax faxmaster lp lpadmin plugdev root sambashare scanner ssh sudo syslog www-data