bzr crashed with AttributeError in is_compatible(): 'SvnBasisTree' object has no attribute '_revision_id'

[Christian González]

I branched a SVN repo with "bzr branch https://REPO-A repo-a", then modified a few files and committed them with "bzr commit".
Then checked out a lightweit copy of same repo using "bzr checkout --lightweight https://REPO-A repo-b" into another dir

Then I cded into repo-a and did a "bzr diff --old=../repo_b" --> CRASH

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: bzr 2.4.2-0ubuntu1
Uname: Linux 3.0.20-030020-generic x86_64
NonfreeKernelModules: nvidia wl
ApportVersion: 1.23-0ubuntu4
Architecture: amd64
BzrDebugFlags: set()
BzrVersion: 2.4.2
CommandLine: ['/usr/bin/bzr', 'diff', '--old=../fmf-clean/']
CrashDb: bzr
Date: Fri Mar 2 21:15:04 2012
ExecutablePath: /usr/bin/bzr
FileSystemEncoding: UTF-8
InstallationMedia: Kubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
InterpreterPath: /usr/bin/python2.7
Locale: de_AT.UTF-8
PackageArchitecture: all
Platform: Linux-3.0.20-030020-generic-x86_64-with-Ubuntu-11.10-oneiric
ProcCmdline: /usr/bin/python /usr/bin/bzr diff --old=../fmf-clean/
PythonVersion: 2.7.2
SourcePackage: bzr
Title: bzr crashed with AttributeError in is_compatible(): 'SvnBasisTree' object has no attribute '_revision_id'
UpgradeStatus: No upgrade log present (probably fresh install)
UserEncoding: UTF-8
UserGroups: adm admin audio cdrom dialout fax floppy games lpadmin plugdev sambashare scanner sudo syslog users