[7.0]meeting reminder failing

os : windows

to reproduce start from a new fresh db

create an event with reccuring option

for the until paramater give a end date ( e.g. next calendar date) set a reminder option(5min)

make the Run Event Reminder scheduler run

trying execute the function def get_recurrent_dates(rrulestring, exdate, startdate=None, exrule=None) of base_calendar.py

it fails with the following stack trace:

2013-06-15 22:24:55,983 2816 ERROR fusion openerp.addons.base.ir.ir_cron: Call of self.pool.get('calendar.alarm').do_run_scheduler(cr, uid, *(False,)) failed in Job 6
Traceback (most recent call last):
  File "C:\workspace_fusion\openerp_server\openerp\addons\base\ir\ir_cron.py", line 133, in _callback
    method(cr, uid, *args)
  File "C:\workspace_fusion\openerp_server\openerp\addons\base_calendar\base_calendar.py", line 861, in do_run_scheduler
    recurrent_dates = get_recurrent_dates(res_obj.rrule, res_obj.exdate, event_date, res_obj.exrule)
  File "C:\workspace_fusion\openerp_server\openerp\addons\base_calendar\base_calendar.py", line 66, in get_recurrent_dates
    return list(rset1)
  File "C:\Python27\lib\site-packages\python_dateutil-1.5-py2.7.egg\dateutil\rrule.py", line 869, in _iter
    self._genitem(rlist, gen)
  File "C:\Python27\lib\site-packages\python_dateutil-1.5-py2.7.egg\dateutil\rrule.py", line 829, in __init__
    self.dt = gen()
  File "C:\Python27\lib\site-packages\python_dateutil-1.5-py2.7.egg\dateutil\rrule.py", line 511, in _iter
    if until and res > until:
TypeError: can't compare offset-naive and offset-aware datetimes

Thanks for your help