software-center crashed with signal 5 in _XReadEvents()

I just opened the Software Centre from the HUD, it started up and showed the main window. After about 2 seconds the window dimmed, then the app window vanished without me doing anything.

I am using the 13.10 development build.

software-center:
  Installed: 13.05-0ubuntu2
  Candidate: 13.05-0ubuntu2
  Version table:
 *** 13.05-0ubuntu2 0
        500 http://archive.ubuntu.com/ubuntu/ saucy/main i386 Packages
        100 /var/lib/dpkg/status

ProblemType: Crash
DistroRelease: Ubuntu 13.10
Package: software-center 13.05-0ubuntu2
ProcVersionSignature: Ubuntu 3.10.0-2.11-generic 3.10.0
Uname: Linux 3.10.0-2-generic i686
ApportVersion: 2.10.2-0ubuntu4
Architecture: i386
Date: Sat Jul 13 10:11:49 2013
ExecutablePath: /usr/share/software-center/software-center
InstallationDate: Installed on 2012-06-17 (391 days ago)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423)
InterpreterPath: /usr/bin/python2.7
MarkForUpload: True
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/bin/software-center
ProcEnviron:
 LANGUAGE=en_CA:en
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_CA.UTF-8
 SHELL=/bin/bash
Signal: 5
SourcePackage: software-center
StacktraceTop:
 ?? () from /usr/lib/i386-linux-gnu/libX11.so.6
 ?? () from /usr/lib/i386-linux-gnu/libX11.so.6
 _XReadEvents () from /usr/lib/i386-linux-gnu/libX11.so.6
 ?? () from /usr/lib/i386-linux-gnu/libcairo.so.2
 ?? () from /usr/lib/i386-linux-gnu/libcairo.so.2
Title: software-center crashed with signal 5 in _XReadEvents()
UpgradeStatus: Upgraded to saucy on 2013-07-04 (9 days ago)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo