IndexError exception when branching into subversion format repo

[Christian Walther]

bzr init-repo --subversion bazaar
cd bazaar
bzr branch svn+http://svn.libsdl.org/trunk/SDL SDL-trunk

gives me the following backtrace:

bzr: ERROR: exceptions.IndexError: list index out of range

Traceback (most recent call last):
  File "/opt/local/lib/python2.5/site-packages/bzrlib/commands.py", line 802, in run_bzr_catch_errors
    return run_bzr(argv)
  File "/opt/local/lib/python2.5/site-packages/bzrlib/commands.py", line 758, in run_bzr
    ret = run(*run_argv)
  File "/opt/local/lib/python2.5/site-packages/bzrlib/commands.py", line 492, in run_argv_aliases
    return self.run(**all_cmd_args)
  File "/opt/local/lib/python2.5/site-packages/bzrlib/builtins.py", line 905, in run
    possible_transports=[to_transport])
  File "/opt/local/lib/python2.5/site-packages/bzrlib/plugins/svn/remote.py", line 75, in sprout
    result_repo.fetch(repo, revision_id=revision_id)
  File "/opt/local/lib/python2.5/site-packages/bzrlib/repository.py", line 873, in fetch
    return inter.fetch(revision_id=revision_id, pb=pb, find_ghosts=find_ghosts)
  File "/opt/local/lib/python2.5/site-packages/bzrlib/plugins/svn/commit.py", line 777, in fetch
    self.copy_content(revision_id=revision_id, pb=pb)
  File "/opt/local/lib/python2.5/site-packages/bzrlib/plugins/svn/commit.py", line 739, in copy_content
    revision_id = self.source.revision_parents(revision_id)[0]
IndexError: list index out of range

bzr 1.0.0 on python 2.5.1.final.0 (darwin)
arguments: ['/opt/local/bin/bzr', 'branch', 'svn+http://svn.libsdl.org/trunk/SDL', 'SDL-trunk']
encoding: 'UTF-8', fsenc: 'utf-8', lang: 'de_CH.UTF-8'
plugins:
  gtk /opt/local/lib/python2.5/site-packages/bzrlib/plugins/gtk [0.93.0]
  launchpad /opt/local/lib/python2.5/site-packages/bzrlib/plugins/launchpad [unknown]
  multiparent /opt/local/lib/python2.5/site-packages/bzrlib/plugins/multiparent.pyc [unknown]
  svn /opt/local/lib/python2.5/site-packages/bzrlib/plugins/svn [0.4.5]
*** Bazaar has encountered an internal error.
    Please report a bug at https://bugs.launchpad.net/bzr/+filebug
    including this traceback, and a description of what you
    were doing when the error occurred.

('init-repo --subversion' was the first thing I tried after branching into a repository created with 'init-repo' failed saying 'Repository KnitPackRepository is not compatible with repository SvnRepository', before I found out that I should have used 'init-repo --dirstate-with-subtree'.)