bzr crashed with KeyError in annotate(): u'current:/home/username/Documents/Workspace/www/iwstudio/trunk'

Binary package hint: bzr

Tryed to open annotate from the working tree in bzr explorer's main window

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: bzr 2.3.1-1ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic-pae 2.6.38.2
Uname: Linux 2.6.38-8-generic-pae i686
NonfreeKernelModules: nvidia
Architecture: i386
BzrDebugFlags: set()
BzrVersion: 2.3.1
CommandLine: ['/usr/bin/bzr', 'explorer']
CrashDb: bzr
Date: Wed Jun 8 16:45:29 2011
ExecutablePath: /usr/bin/bzr
FileSystemEncoding: UTF-8
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
InterpreterPath: /usr/bin/python2.7
LocalLibraries: /usr/local/lib/libkeepalive.so
Locale: en_US.UTF-8
PackageArchitecture: all
Platform: Linux-2.6.38-8-generic-pae-i686-with-Ubuntu-11.04-natty
ProcCmdline: /usr/bin/python /usr/bin/bzr explorer
ProcEnviron:
 LANGUAGE=en_US:en
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
PythonVersion: 2.7.1
SourcePackage: bzr
Title: bzr crashed with KeyError in annotate(): u'current:/home/username/Documents/Workspace/www/iwstudio/trunk'
UpgradeStatus: No upgrade log present (probably fresh install)
UserEncoding: UTF-8
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare vboxusers