bzr-svn fails to branch repo with existing bzr-svn metadata (AssertionError: 917 != 922)

I'm trying to check out a SVN repository that I previously used bzr-svn with (so it has existing bzr-svn metadata in it).

Possibly some corruption of the repository metadata?

art@art-debian-1:~/src$ ~/src/bzr-2.4.2/bzr co http://localhost:17280/repos/nos/trunk/ nos-trunk-bzr
HTTP localhost:17280, Realm: [snip]
HTTP pe1@localhost:17280, Realm: [snip]
Initialising Subversion metadata cache in /home/art/.bazaar/svn-cache/b7e603d3-bd60-4ffc-a040-4c979f3b195b.
inconsistent details in skipped record: ('classpath-20111103160810-5aqv69vj88pp5ewq-38', '<email address hidden>') ('12181935 278 0 517', ((),)) ('5747754 278 0 517', ((('classpath-20111103160810-5aqv69vj88pp5ewq-38', '<email address hidden>'),),))
inconsistent details in skipped record: ('project-20111103160810-5aqv69vj88pp5ewq-39', '<email address hidden>') ('12182213 253 0 567', ((),)) ('5748032 253 0 567', ((('project-20111103160810-5aqv69vj88pp5ewq-39', '<email address hidden>'),),))
inconsistent details in skipped record: ('org.maven.ide.eclips-20111103160810-5aqv69vj88pp5ewq-89', '<email address hidden>') ('12207168 200 0 252', ((),)) ('5767827 200 0 252', ((('org.maven.ide.eclips-20111103160810-5aqv69vj88pp5ewq-89', '<email address hidden>'),),))
bzr: ERROR: exceptions.AssertionError: 917 != 922

Traceback (most recent call last):
  File "/home/art/src/bzr-2.4.2/bzrlib/commands.py", line 946, in exception_to_return_code
    return the_callable(*args, **kwargs)
  File "/home/art/src/bzr-2.4.2/bzrlib/commands.py", line 1150, in run_bzr
    ret = run(*run_argv)
  File "/home/art/src/bzr-2.4.2/bzrlib/commands.py", line 699, in run_argv_aliases
    return self.run(**all_cmd_args)
  File "/home/art/src/bzr-2.4.2/bzrlib/commands.py", line 721, in run
    return self._operation.run_simple(*args, **kwargs)
  File "/home/art/src/bzr-2.4.2/bzrlib/cleanup.py", line 135, in run_simple
    self.cleanups, self.func, *args, **kwargs)
  File "/home/art/src/bzr-2.4.2/bzrlib/cleanup.py", line 165, in _do_with_cleanups
    result = func(*args, **kwargs)
  File "/home/art/src/bzr-2.4.2/bzrlib/builtins.py", line 1408, in run
    accelerator_tree, hardlink)
  File "/home/art/.bazaar/plugins/svn/branch.py", line 432, in create_checkout
    hardlink=hardlink)
  File "/home/art/.bazaar/plugins/svn/branch.py", line 363, in _create_heavyweight_checkout
    checkout_branch.pull(self, stop_revision=revision_id)
  File "/home/art/src/bzr-2.4.2/bzrlib/branch.py", line 1109, in pull
    possible_transports=possible_transports, *args, **kwargs)
  File "/home/art/.bazaar/plugins/svn/branch.py", line 989, in pull
    fetch_non_mainline=fetch_non_mainline)
  File "/home/art/.bazaar/plugins/svn/branch.py", line 942, in _basic_pull
    fetch_non_mainline=fetch_non_mainline)
  File "/home/art/.bazaar/plugins/svn/branch.py", line 862, in _update_revisions
    exclude_non_mainline=(not fetch_non_mainline))
  File "/home/art/.bazaar/plugins/svn/branch.py", line 830, in fetch
    exclude_non_mainline=exclude_non_mainline)
  File "/home/art/.bazaar/plugins/svn/branch.py", line 842, in _fetch_revmetas
    project=self.source.project, mapping=self.source.mapping)
  File "/home/art/.bazaar/plugins/svn/fetch.py", line 1647, in fetch
    pack_hint = self._fetch_revisions(needed, pb)
  File "/home/art/.bazaar/plugins/svn/fetch.py", line 1568, in _fetch_revisions
    use_replay=self._use_replay)
  File "/home/art/.bazaar/plugins/svn/fetch.py", line 1538, in _fetch_revisions_nochunks
    parent_revmeta)
  File "/home/art/.bazaar/plugins/svn/fetch.py", line 1478, in _fetch_revision_switch
    report_inventory_contents(reporter, parent_revnum, start_empty)
  File "/home/art/.bazaar/plugins/svn/errors.py", line 141, in convert
    return unbound(*args, **kwargs)
  File "/home/art/.bazaar/plugins/svn/fetch.py", line 1188, in report_inventory_contents
    reporter.finish()
  File "/usr/lib/python2.7/dist-packages/subvertpy/delta.py", line 71, in apply_window
    target_chunks.append(apply_txdelta_window(sbuf, window))
  File "/usr/lib/python2.7/dist-packages/subvertpy/delta.py", line 57, in apply_txdelta_window
    raise AssertionError("%d != %d" % (len(tview), tview_len))
AssertionError: 917 != 922

bzr 2.4.2 on python 2.7.2 (Linux-3.0.0-1-686-pae-i686-with-debian-wheezy-sid)
arguments: ['/home/art/src/bzr-2.4.2/bzr', 'co',
    'http://localhost:17280/repos/nos/trunk/', 'nos-trunk-bzr']
plugins: bash_completion[2.4.2], changelog_merge[2.4.2], launchpad[2.4.2],
    netrc_credential_store[2.4.2], news_merge[2.4.2], svn[1.1.1],
    weave_fmt[2.4.2]
encoding: 'UTF-8', fsenc: 'UTF-8', lang: 'en_GB.UTF-8'