[Chrome with eTiny] M2O search fail sometimes!

Created a LEAD, but cant select a "Partner" on the "Leads" tab. The search list does appear, and I select the radio button next to required partner, but when I click Select, the Partner field renames blank !

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Traceback (most recent call last):
  File "/mnt/openerp/server/bin/netsvc.py", line 244, in dispatch
    result = LocalService(service_name)(method, *params)
  File "/mnt/openerp/server/bin/netsvc.py", line 73, in __call__
    return getattr(self, method)(*params)
  File "/mnt/openerp/server/bin/addons/base_module_record/base_module_record.py", line 38, in execute
    res = super(recording_objects_proxy, self).execute(*args, **argv)
  File "/mnt/openerp/server/bin/addons/use_control/services.py", line 72, in execute
    return super(recording_objects_proxy, self).execute(db, uid, passwd, object, method, *args)
  File "/mnt/openerp/server/bin/service/web_services.py", line 577, in execute
    res = service.execute(db, uid, object, method, *args)
  File "/mnt/openerp/server/bin/osv/osv.py", line 61, in wrapper
    return f(self, dbname, *args, **kwargs)
  File "/mnt/openerp/server/bin/osv/osv.py", line 120, in execute
    res = pool.execute_cr(cr, uid, obj, method, *args, **kw)
  File "/mnt/openerp/server/bin/osv/osv.py", line 112, in execute_cr
    return getattr(object, method)(cr, uid, *args, **kw)
  File "/mnt/openerp/server/bin/osv/orm.py", line 2164, in read
    result = self._read_flat(cr, user, select, fields, context, load)
  File "/mnt/openerp/server/bin/osv/orm.py", line 2235, in _read_flat
    order_by), sub_ids)
  File "/mnt/openerp/server/bin/sql_db.py", line 84, in execute
    res = self._obj.execute(query, params)
DataError: invalid input syntax for integer: "[object HTMLInputElement]"