AssertionError: <num1> != <num2>

[Gordon Tyler]

When updating a bzr branch of a svn repo, I'm getting the following AssertionError consistently. This has worked before, but after returning to work after a week's vacation, with various commits from teammates during that week, it now fails:

bzr: ERROR: exceptions.AssertionError: 14206 != 15756

Traceback (most recent call last):
  File "bzrlib\commands.pyo", line 946, in exception_to_return_code
  File "bzrlib\commands.pyo", line 1150, in run_bzr
  File "bzrlib\commands.pyo", line 699, in run_argv_aliases
  File "bzrlib\commands.pyo", line 721, in run
  File "bzrlib\cleanup.pyo", line 135, in run_simple
  File "bzrlib\cleanup.pyo", line 165, in _do_with_cleanups
  File "bzrlib\builtins.pyo", line 1076, in run
  File "bzrlib\decorators.pyo", line 217, in write_locked
  File "bzrlib\workingtree.pyo", line 1017, in pull
  File "bzrlib\branch.pyo", line 1108, in pull
  File "C:/Program Files (x86)/Bazaar2.4/plugins\svn\branch.py", line 820, in pull
  File "C:/Program Files (x86)/Bazaar2.4/plugins\svn\branch.py", line 752, in _update_revisions
  File "C:/Program Files (x86)/Bazaar2.4/plugins\svn\branch.py", line 726, in fetch
  File "C:/Program Files (x86)/Bazaar2.4/plugins\svn\branch.py", line 736, in _fetch_revmetas
  File "C:/Program Files (x86)/Bazaar2.4/plugins\svn\fetch.py", line 1585, in fetch
  File "C:/Program Files (x86)/Bazaar2.4/plugins\svn\fetch.py", line 1510, in _fetch_revisions
  File "C:/Program Files (x86)/Bazaar2.4/plugins\svn\fetch.py", line 1480, in _fetch_revisions_nochunks
  File "C:/Program Files (x86)/Bazaar2.4/plugins\svn\fetch.py", line 1420, in _fetch_revision_switch
  File "C:/Program Files (x86)/Bazaar2.4/plugins\svn\errors.py", line 141, in convert
  File "C:/Program Files (x86)/Bazaar2.4/plugins\svn\fetch.py", line 1143, in report_inventory_contents
  File "subvertpy\delta.pyo", line 71, in apply_window
  File "subvertpy\delta.pyo", line 57, in apply_txdelta_window
AssertionError: 14206 != 15756

bzr 2.4.0 on python 2.6.6 (Windows-7-6.1.7601-SP1)
arguments: ['bzr', 'pull']
plugins: bzrtools[2.4.0], changelog_merge[2.4.0], colo[0.2.1dev],
    explorer[1.2.1], fastimport[0.12.0dev], launchpad[2.4.0], loom[2.2.1dev],
    netrc_credential_store[2.4.0], news_merge[2.4.0], pipeline[1.1.0],
    qbzr[0.21.1], rewrite[0.6.3dev], svn[1.1.0], upload[1.0.1dev],
    wincrypt_credential_store[1.0.0dev1], xmloutput[0.8.7]
encoding: 'cp1252', fsenc: 'mbcs', lang: None