cannot create leaves or allocation request

[Aline (OpenERP)]

in chrome trunk
- create a leave request (Human Resources / Holidays Management / leaves request)
- try to save it or confirm it

bug :

[2011-03-10 17:03:50,143][nodemo] ERROR:web-services:Uncaught exception
Traceback (most recent call last):
  File "/home/aline/openerp/trunk/server/openerp/osv/osv.py", line 122, in wrapper
    return f(self, dbname, *args, **kwargs)
  File "/home/aline/openerp/trunk/server/openerp/osv/osv.py", line 176, in execute
    res = self.execute_cr(cr, uid, obj, method, *args, **kw)
  File "/home/aline/openerp/trunk/server/openerp/osv/osv.py", line 167, in execute_cr
    return getattr(object, method)(cr, uid, *args, **kw)
  File "/home/aline/openerp/trunk/server/openerp/osv/orm.py", line 3629, in create
    cr.execute('insert into "'+self._table+'" (id'+upd0+") values ("+str(id_new)+upd1+')', tuple(upd2))
  File "/home/aline/openerp/trunk/server/openerp/sql_db.py", line 78, in wrapper
    return f(self, *args, **kwargs)
  File "/home/aline/openerp/trunk/server/openerp/sql_db.py", line 131, in execute
    res = self._obj.execute(query, params)
DataError: ERREUR: syntaxe en entrée invalide pour l'entier : « »
LIGNE 1 : ...draft',E'2011-03-12 17:01:00',NULL,E'remove',NULL,E'',1,now(...