update-manager crashed with AttributeError in doPostInitialUpdate(): 'NoneType' object has no attribute 'reqReinstallPkgs'

Binary package hint: update-manager

11.04natty

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: update-manager 1:0.146
ProcVersionSignature: Ubuntu 2.6.38-3.30-generic 2.6.38-rc4
Uname: Linux 2.6.38-3-generic i686
Architecture: i386
Date: Fri Feb 18 15:59:55 2011
ExecutablePath: /usr/bin/update-manager
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha i386 (20110216)
InterpreterPath: /usr/bin/python2.7
PackageArchitecture: all
ProcCmdline: /usr/bin/python2.7 /usr/bin/update-manager --dist-upgrade
ProcEnviron:
 LANGUAGE=en_GB:en
 PATH=(custom, no user)
 LANG=en_GB.UTF-8
 LC_MESSAGES=en_GB.UTF-8
 SHELL=/bin/bash
PythonArgs: ['/usr/bin/update-manager', '--dist-upgrade']
SourcePackage: update-manager
Title: update-manager crashed with AttributeError in doPostInitialUpdate(): 'NoneType' object has no attribute 'reqReinstallPkgs'
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