bzr: ERROR: exceptions.TypeError: descriptor '__init__' requires a 'exceptions.Exception' object but received a 'NoneType'

Traceback (most recent call last):
  File "/opt/local/lib/python2.5/site-packages/bzrlib/commands.py", line 834, in run_bzr_catch_errors
    return run_bzr(argv)
  File "/opt/local/lib/python2.5/site-packages/bzrlib/commands.py", line 790, 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 840, in run
    stop_revision=revision_id)
  File "/opt/local/lib/python2.5/site-packages/bzrlib/decorators.py", line 127, in read_locked
    return unbound(self, *args, **kwargs)
  File "/opt/local/lib/python2.5/site-packages/bzrlib/branch.py", line 1556, in push
    _override_hook_source_branch=_override_hook_source_branch)
  File "/opt/local/lib/python2.5/site-packages/bzrlib/branch.py", line 1598, in _push_with_bound_branches
    result = self._basic_push(target, overwrite, stop_revision)
  File "/opt/local/lib/python2.5/site-packages/bzrlib/branch.py", line 1617, in _basic_push
    target.update_revisions(self, stop_revision)
  File "/Users/matid/.bazaar/plugins/svn/branch.py", line 367, in update_revisions
    push(self, other, revid)
  File "/Users/matid/.bazaar/plugins/svn/commit.py", line 701, in push
    builder.commit(rev.message)
  File "/Users/matid/.bazaar/plugins/svn/commit.py", line 454, in commit
    self._svn_revprops, done, None, False)
  File "/Users/matid/.bazaar/plugins/svn/errors.py", line 117, in convert
    return unbound(*args, **kwargs)
  File "/Users/matid/.bazaar/plugins/svn/transport.py", line 539, in get_commit_editor
    lock_token, keep_locks)
  File "/usr/local/lib/svn-python/libsvn/ra.py", line 560, in svn_ra_get_commit_editor3
    return apply(_ra.svn_ra_get_commit_editor3, args)
  File "/usr/local/lib/svn-python/svn/core.py", line 63, in _new_from_err_list
    child = cls(message, apr_err, child, file, line)
  File "/usr/local/lib/svn-python/svn/core.py", line 39, in __init__
    Exception.__init__(message, apr_err)
TypeError: descriptor '__init__' requires a 'exceptions.Exception' object but received a 'NoneType'

bzr 1.3.1 on python 2.5.2.final.0 (darwin)
arguments: ['/opt/local/bin/bzr', 'push']
encoding: 'UTF-8', fsenc: 'utf-8', lang: 'en_US.UTF-8'
plugins:
  launchpad            /opt/local/lib/python2.5/site-packages/bzrlib/plugins/launchpad [unknown]
  svn                  /Users/matid/.bazaar/plugins/svn [0.4.9]
*** 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.