pulling from svn branch fails with sqlite3.ProgrammingError

[IWATA Hidetaka]

Failed to pull from svn branch with sqlite3.ProgrammingError.
Traceback is below.

bzr: ERROR: sqlite3.ProgrammingError: You must not use 8-bit bytestrings unless you use a text_factory that can interpret 8-bit bytestrings (like text_factory = str). It is highly recommended that you
 instead just switch your application to Unicode strings.

Traceback (most recent call last):
  File "bzrlib\commands.pyo", line 937, in exception_to_return_code
  File "bzrlib\commands.pyo", line 1128, in run_bzr
  File "bzrlib\commands.pyo", line 673, in run_argv_aliases
  File "bzrlib\commands.pyo", line 697, in run
  File "bzrlib\cleanup.pyo", line 136, in run_simple
  File "bzrlib\cleanup.pyo", line 166, in _do_with_cleanups
  File "bzrlib\builtins.pyo", line 1246, in run
  File "bzrlib\branch.pyo", line 1111, in pull
  File "C:/Program Files/Bazaar2.6/plugins\svn\branch.py", line 1000, in pull
  File "C:/Program Files/Bazaar2.6/plugins\svn\branch.py", line 954, in _basic_pull
  File "C:/Program Files/Bazaar2.6/plugins\svn\branch.py", line 912, in _update_tags
  File "C:/Program Files/Bazaar2.6/plugins\svn\tags.py", line 396, in merge_to
  File "C:/Program Files/Bazaar2.6/plugins\svn\tags.py", line 315, in _resolve_tags_ancestry
  File "C:/Program Files/Bazaar2.6/plugins\svn\tags.py", line 67, in _resolve_reverse_tags_fallback
  File "C:/Program Files/Bazaar2.6/plugins\svn\revmeta.py", line 147, in get_revision_id
  File "C:/Program Files/Bazaar2.6/plugins\svn\revmeta.py", line 810, in get_revision_info
  File "C:/Program Files/Bazaar2.6/plugins\svn\revmeta.py", line 761, in _retrieve
  File "C:/Program Files/Bazaar2.6/plugins\svn\cache\sqlitecache.py", line 281, in get_revision
  File "C:/Program Files/Bazaar2.6/plugins\svn\cache\sqlitecache.py", line 102, in execute
ProgrammingError: You must not use 8-bit bytestrings unless you use a text_factory that can interpret 8-bit bytestrings (like text_factory = str). It is highly recommended that you instead just switch
 your application to Unicode strings.

bzr 2.6.0dev3 on python 2.6.6 (Windows-7-6.1.7601-SP1)
arguments: ['bzr', 'pull']
plugins: bzrtools[2.5.0], colo[0.4.0], delta[unknown], explorer[1.3.0],
    git[0.6.9], launchpad[2.6.0dev3], loom[2.3.0dev], pipeline[1.4.0],
    qbzr[0.23.0], recommit[unknown], rewrite[0.6.4dev],
    rewrite_interactive[unknown], svn[1.2.3dev], xmloutput[0.8.8]
encoding: 'cp932', fsenc: 'mbcs', lang: 'ja'