Comment 1 for bug 294726

Happened to me again in: https://code.edge.launchpad.net/~beuno/launchpad/ui_bugs_n_branches_revenge

bzr: ERROR: Server sent an unexpected error: ('error', '<ProtocolError for xmlrpc.lp.internal:8097/branchfilesystem: -1 >')

Traceback from .bzr.log:

9.270 fetch up to rev {<email address hidden>}
46.975 Traceback (most recent call last):
  File "/usr/lib/python2.5/site-packages/bzrlib/commands.py", line 849, in run_bzr_catch_errors
    return run_bzr(argv)
  File "/usr/lib/python2.5/site-packages/bzrlib/commands.py", line 795, in run_bzr
    ret = run(*run_argv)
  File "/usr/lib/python2.5/site-packages/bzrlib/commands.py", line 495, in run_argv_aliases
    return self.run(**all_cmd_args)
  File "/usr/lib/python2.5/site-packages/bzrlib/builtins.py", line 913, in run
    use_existing_dir=use_existing_dir)
  File "/usr/lib/python2.5/site-packages/bzrlib/push.py", line 162, in _show_push_branch
    stop_revision=revision_id)
  File "/usr/lib/python2.5/site-packages/bzrlib/decorators.py", line 138, in read_locked
    result = unbound(self, *args, **kwargs)
  File "/usr/lib/python2.5/site-packages/bzrlib/branch.py", line 1749, in push
    _override_hook_source_branch=_override_hook_source_branch)
  File "/usr/lib/python2.5/site-packages/bzrlib/branch.py", line 2476, in _run_with_write_locked_target
    target.unlock()
  File "/usr/lib/python2.5/site-packages/bzrlib/remote.py", line 1520, in unlock
    self._unlock(branch_token, repo_token)
  File "/usr/lib/python2.5/site-packages/bzrlib/remote.py", line 1488, in _unlock
    self._translate_error(err, token=str((branch_token, repo_token)))
  File "/usr/lib/python2.5/site-packages/bzrlib/remote.py", line 1361, in _translate_error
    self.repository._translate_error(err, branch=self, **context)
  File "/usr/lib/python2.5/site-packages/bzrlib/remote.py", line 359, in _translate_error
    self.bzrdir._translate_error(err, repository=self, **context)
  File "/usr/lib/python2.5/site-packages/bzrlib/remote.py", line 90, in _translate_error
    _translate_error(err, bzrdir=self, **context)
  File "/usr/lib/python2.5/site-packages/bzrlib/remote.py", line 1796, in _translate_error
    raise errors.UnknownErrorFromSmartServer(err)
UnknownErrorFromSmartServer: Server sent an unexpected error: ('error', '<ProtocolError for xmlrpc.lp.internal:8097/branchfilesystem: -1 >')

46.976 return code 3