UnicodeEncodeError: 'ascii' codec can't encode characters in position

[Pavel-II]

Try bzr branch lp:stellarium
And get error:
bzr: ERROR: exceptions.UnicodeEncodeError: 'ascii' codec can't encode characters in position 34-43: ordinal not in range(128)

Traceback (most recent call last):
  File "bzrlib\commands.pyo", line 930, in exception_to_return_code
  File "bzrlib\commands.pyo", line 1141, 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 1489, in run
  File "bzrlib\bzrdir.pyo", line 366, in sprout
  File "bzrlib\cleanup.pyo", line 132, in run
  File "bzrlib\cleanup.pyo", line 166, in _do_with_cleanups
  File "bzrlib\bzrdir.pyo", line 434, in _sprout
  File "bzrlib\bzrdir.pyo", line 906, in create_workingtree
  File "bzrlib\workingtree_4.pyo", line 1565, in initialize
  File "bzrlib\transform.pyo", line 2535, in build_tree
  File "bzrlib\transform.pyo", line 2590, in _build_tree
  File "bzrlib\progress.pyo", line 116, in update
  File "bzrlib\ui\text.pyo", line 374, in _progress_updated
  File "bzrlib\ui\text.pyo", line 554, in show_progress
  File "bzrlib\ui\text.pyo", line 536, in _repaint
  File "bzrlib\ui\text.pyo", line 440, in _show_line
UnicodeEncodeError: 'ascii' codec can't encode characters in position 34-43: ordinal not in range(128)

bzr 2.6b1 on python 2.6.6 (Windows-post2008Server-6.2.9200)
arguments: ['bzr', 'branch', 'lp:stellarium']
plugins: bzrtools[2.5.0], changelog_merge[2.6b1], colo[0.4.0],
    explorer[1.3.0dev], fastimport[0.14.0dev], git[0.6.8dev],
    launchpad[2.6b1], loom[2.3.0dev], netrc_credential_store[2.6b1],
    news_merge[2.6b1], pipeline[1.4.0], qbzr[0.23.0dev], rewrite[0.6.4dev],
    svn[1.2.2dev], upload[1.2.0dev], xmloutput[0.8.8]
encoding: 'cp1251', fsenc: 'mbcs', lang: None

*** Bazaar has encountered an internal error. This probably indicates a
    bug in Bazaar. You can help us fix it by filing a bug report at
        https://bugs.launchpad.net/bzr/+filebug
    including this traceback and a description of the problem.