I've got a error when I tried to get a boleto

I'm getting a error when I do try to generate a boleto from a invoice.

Steps to reproduce the error:
The user goes on Sales > Sales Order and select a Invoice with a status "Sales Order" ;
The user clicks on View Invoice Button;
The system shows the Invoice;
The user goes on More button and cliks on Gerar Boleto;
 - The system show Gerar Boleto wizard;
 - The user select a bank from the list and press Gerar Boleto Button;

The system show a error message below:

2014-04-02 02:43:10,304 15600 ERROR localizacao openerp.netsvc: The barcode must have 44 caracteres, found 45
Traceback (most recent call last):
  File "/opt/openerp_loc/server/openerp/netsvc.py", line 292, in dispatch_rpc
    result = ExportService.getService(service_name).dispatch(method, params)
  File "/opt/openerp_loc/server/openerp/service/web_services.py", line 626, in dispatch
    res = fn(db, uid, *params)
  File "/opt/openerp_loc/server/openerp/osv/osv.py", line 190, in execute_kw
    return self.execute(db, uid, obj, method, *args, **kw or {})
  File "/opt/openerp_loc/server/openerp/osv/osv.py", line 132, in wrapper
    return f(self, dbname, *args, **kwargs)
  File "/opt/openerp_loc/server/openerp/osv/osv.py", line 199, in execute
    res = self.execute_cr(cr, uid, obj, method, *args, **kw)
  File "/opt/openerp_loc/server/openerp/osv/osv.py", line 187, in execute_cr
    return getattr(object, method)(cr, uid, *args, **kw)
  File "/opt/openerp_loc/localizacao_br_addons/boleto/wizard/boleto_create.py", line 155, in create_boleto
    boleto_file = self.gen_boleto(cr, uid, ids, boleto_ids, context)
  File "/opt/openerp_loc/localizacao_br_addons/boleto/wizard/boleto_create.py", line 197, in gen_boleto
    boleto_pdf.drawBoleto(boleto)
  File "/usr/local/lib/python2.7/dist-packages/pyboleto/pdf.py", line 815, in drawBoleto
    d = self._drawReciboCaixa(boletoDados, x, y)
  File "/usr/local/lib/python2.7/dist-packages/pyboleto/pdf.py", line 751, in _drawReciboCaixa
    boletoDados.linha_digitavel
  File "/usr/local/lib/python2.7/dist-packages/pyboleto/data.py", line 422, in linha_digitavel
    linha = self.barcode
  File "/usr/local/lib/python2.7/dist-packages/pyboleto/data.py", line 186, in barcode
    'The barcode must have 44 caracteres, found %d' % len(num))
BoletoException: The barcode must have 44 caracteres, found 45