update-apt-xapian-index crashed with ValueError in index(): invalid null reference in method 'Document_add_value', argument 3 of type 'std::string const &'

[userdce]

apt-xapian-index

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: apt-xapian-index 0.44ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-7.8-generic 3.0.0
Uname: Linux 3.0.0-7-generic x86_64
Architecture: amd64
Date: Tue Jul 26 10:38:45 2011
ExecutablePath: /usr/sbin/update-apt-xapian-index
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Alpha amd64 (20110716)
InterpreterPath: /usr/bin/python2.7
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/sbin/update-apt-xapian-index --batch-mode --force
ProcEnviron:

PythonArgs: ['/usr/sbin/update-apt-xapian-index', '--batch-mode', '--force']
SourcePackage: apt-xapian-index
Title: update-apt-xapian-index crashed with ValueError in index(): invalid null reference in method 'Document_add_value', argument 3 of type 'std::string const &'
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: