software-center crashed with IOError in _open(): [Errno 13] Permission denied: '/home/paul/.cache/software-center/software-center.log'

Binary package hint: software-center

Every time I try to open the Software Center, it crashes. This has happened every time since I've had since Alpha 2. I figured this was just a common error, being as it was only in Alpha. I had done a "partial upgrade" before being notified on how dangerous it was, and started getting updates from Synaptic instead. So this may be my doing. I attempted to reinstall the package "software-center" in Synaptic, however it failed. I'm hoping this can be fixed as easily as getting an "11.04 beta 1" ISO image, and using synaptic to repair the packages. If this is the case, please post how to do so, or point me to a post on how to do so.

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: software-center 3.1.25
ProcVersionSignature: Ubuntu 2.6.38-7.39-generic-pae 2.6.38
Uname: Linux 2.6.38-7-generic-pae i686
Architecture: i386
Date: Mon Apr 4 16:46:11 2011
ExecutablePath: /usr/share/software-center/software-center
InstallationMedia: Ubuntu 10.04.2 LTS "Lucid Lynx" - Release i386 (20110211.1)
InterpreterPath: /usr/bin/python2.7
ProcCmdline: /usr/bin/python /usr/bin/software-center
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
PythonArgs: ['/usr/bin/software-center']
SourcePackage: software-center
Title: software-center crashed with IOError in _open(): [Errno 13] Permission denied: '/home/paul/.cache/software-center/software-center.log'
UpgradeStatus: Upgraded to natty on 2011-03-24 (10 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare