crm_todo : litle arrow to change timebox give bug

[Aline (OpenERP)]

install crm_todo, go to opportunity, task tab and create a new task -> change the timeboxe with the litle arrow :

Client Traceback (most recent call last):
  File "/home/aline/source/web/trunk/addons/web/common/http.py", line 154, in dispatch
    response["result"] = method(controller, self, **self.params)
  File "/home/aline/source/web/trunk/addons/web/controllers/main.py", line 796, in call_button
    action = self.call_common(req, model, method, args, domain_id, context_id)
  File "/home/aline/source/web/trunk/addons/web/controllers/main.py", line 788, in call_common
    return getattr(req.session.model(model), method)(*args)
  File "/home/aline/source/web/trunk/addons/web/common/openerplib/main.py", line 429, in proxy
    *args)
  File "/home/aline/source/web/trunk/addons/web/common/openerplib/main.py", line 306, in proxy
    result = self.connector.send(self.service_name, method, *args)
  File "/home/aline/source/web/trunk/addons/web/common/openerplib/main.py", line 276, in send
    raise fault

Server Traceback (most recent call last):
  File "/home/aline/source/web/trunk/addons/web/common/openerplib/main.py", line 257, in send
    result = openerp.netsvc.dispatch_rpc(service_name, method, args)
  File "/home/aline/source/server/trunk/openerp/netsvc.py", line 325, in dispatch_rpc
    result = ExportService.getService(service_name).dispatch(method, params)
  File "/home/aline/source/server/trunk/openerp/service/web_services.py", line 580, in dispatch
    res = fn(db, uid, *params)
  File "/home/aline/source/server/trunk/openerp/osv/osv.py", line 120, in wrapper
    return f(self, dbname, *args, **kwargs)
  File "/home/aline/source/server/trunk/openerp/osv/osv.py", line 172, in execute
    res = self.execute_cr(cr, uid, obj, method, *args, **kw)
  File "/home/aline/source/server/trunk/openerp/osv/osv.py", line 163, in execute_cr
    return getattr(object, method)(cr, uid, *args, **kw)
  File "/home/aline/source/addons/trunk/project_gtd/project_gtd.py", line 93, in prev_timebox
    for task in self.browse(cr,uid,ids):
  File "/home/aline/source/server/trunk/openerp/osv/orm.py", line 4106, in browse
    return self._list_class([browse_record(cr, uid, id, self, cache, context=context, list_class=self._list_class, fields_process=fields_process) for id in select], context=context)
  File "/home/aline/source/server/trunk/openerp/osv/orm.py", line 345, in __init__
    raise BrowseRecordError(_('Wrong ID for the browse record, got %r, expected an integer.') % (id,))
BrowseRecordError: Wrong ID for the browse record, got 'one2many_v_id_1275', expected an integer.