update-apt-xapian-index crashed with DatabaseCreateError in __init__(): Cannot create directory `/var/cache/apt-xapian-index/index.1' (File exists)

[sc00ut]

Binary package hint: apt-xapian-index

Trying to install .deb pkg

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: apt-xapian-index 0.41ubuntu5
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic x86_64
NonfreeKernelModules: fglrx
Architecture: amd64
Date: Sun Apr 17 11:23:10 2011
ExecutablePath: /usr/sbin/update-apt-xapian-index
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Beta amd64 (20110413)
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 DatabaseCreateError in __init__(): Cannot create directory `/var/cache/apt-xapian-index/index.1' (File exists)
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: