update-software-center-agent crashed with OSError in makedirs(): [Errno 17] File exists: '/root/.cache/software-center/software-center-agent.db.tmp'

[miked]

Dell Inspiron 1150 Laptop without Hard Drive Running Ubuntu 11.10 Oneric Ocelot Beta 1 off USB Drive with updates from Natty Narwhal 11.04 Final

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: software-center 4.1.23.3
ProcVersionSignature: Ubuntu 3.0.0-11.18-generic 3.0.4
Uname: Linux 3.0.0-11-generic i686
ApportVersion: 1.23-0ubuntu1
Architecture: i386
Date: Sat Sep 17 14:12:36 2011
ExecutablePath: /usr/share/software-center/update-software-center-agent
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
InterpreterPath: /usr/bin/python2.7
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/share/software-center/update-software-center-agent --datadir /usr/share/software-center/
ProcCwd: /root
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
PythonArgs: ['/usr/share/software-center/update-software-center-agent', '--datadir', '/usr/share/software-center/']
SourcePackage: software-center
Title: update-software-center-agent crashed with OSError in makedirs(): [Errno 17] File exists: '/root/.cache/software-center/software-center-agent.db.tmp'
UpgradeStatus: Upgraded to oneiric on 2011-09-12 (8 days ago)
UserGroups: admin