Failed to push to svn repository

[IWATA Hidetaka]

(2.4b1) pushing to svn repository crashes with this traceback

bzr: ERROR: exceptions.TypeError: update_revisions() got an unexpected keyword argument 'fetch_tags'

Traceback (most recent call last):
  File "bzrlib\commands.pyo", line 926, in exception_to_return_code
  File "bzrlib\commands.pyo", line 1126, in run_bzr
  File "bzrlib\commands.pyo", line 691, in run_argv_aliases
  File "bzrlib\commands.pyo", line 713, 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 1193, in run
  File "bzrlib\push.pyo", line 140, in _show_push_branch
  File "bzrlib\controldir.pyo", line 512, in push_branch
  File "bzrlib\branch.pyo", line 1105, in push
  File "bzrlib\branch.pyo", line 3470, in push
  File "bzrlib\branch.pyo", line 3251, in _run_with_write_locked_target
  File "bzrlib\branch.pyo", line 3494, in _push_with_bound_branches
  File "bzrlib\branch.pyo", line 2638, in _basic_push
  File "bzrlib\branch.pyo", line 1025, in update_revisions
TypeError: update_revisions() got an unexpected keyword argument 'fetch_tags'

`bzr version` says:
Bazaar (bzr) 2.4b1
  Python interpreter: C:\Program Files\Bazaar\python26.dll 2.6.6
  Python standard library: C:\Program Files\Bazaar\lib\library.zip
  Platform: Windows-7-6.1.7600
  bzrlib: C:\Program Files\Bazaar\lib\library.zip\bzrlib
  Bazaar configuration: C:\Users\iwata\AppData\Roaming\bazaar\2.0
  Bazaar log file: C:\Users\iwata\Documents\.bzr.log

And bzr-svn is 1.1.0dev

To reproduce:
  bzr checkout path/to/svn/repos/trunk trunk
  bzr branch trunk work
  cd work
  # hack to work and make commit
  bzr push ..\trunk