update-apt-xapian-index crashed with AttributeError in _get_distro(): 'module' object has no attribute ''

[sovsep]

Binary package hint: apt-xapian-index

Natty 11.04

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: apt-xapian-index 0.41ubuntu5
ProcVersionSignature: Ubuntu 2.6.38-7.39-generic 2.6.38
Uname: Linux 2.6.38-7-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
Date: Sun Mar 27 12:05:12 2011
ExecutablePath: /usr/sbin/update-apt-xapian-index
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100427.1)
InterpreterPath: /usr/bin/python2.7
ProcCmdline: /usr/bin/python /usr/sbin/update-apt-xapian-index --update -q
ProcCwd: /home/sovsep/Documents
ProcEnviron:
 LANGUAGE=en
 PATH=(custom, no user)
 LANG=de_DE.utf8
 LC_MESSAGES=en_GB.UTF-8
 SHELL=/bin/bash
PythonArgs: ['/usr/sbin/update-apt-xapian-index', '--update', '-q']
SourcePackage: apt-xapian-index
Title: update-apt-xapian-index crashed with AttributeError in _get_distro(): 'module' object has no attribute ''
UpgradeStatus: Upgraded to natty on 2011-03-19 (7 days ago)
UserGroups:

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.