OpenERP Management System

When I clicked on "Start/Open" button,nonconformity I got:

Bug #1167918 reported by Admilson Afonso on 2013-04-11

This bug affects 2 people

Affects		Status	Importance	Assigned to	Milestone
	OpenERP Management System	Fix Released	Undecided	Virgil Dupras

Bug Description

Client Traceback (most recent call last):
  File "d:\OpenERP 7.0\Server\server\openerp\addons\web\http.py", line 203, in dispatch
  File "d:\OpenERP 7.0\Server\server\openerp\addons\web\controllers\main.py", line 1140, in exec_workflow
  File "d:\OpenERP 7.0\Server\server\openerp\addons\web\session.py", line 148, in exec_workflow
  File "d:\OpenERP 7.0\Server\server\openerp\addons\web\session.py", line 31, in proxy_method
  File "d:\OpenERP 7.0\Server\server\openerp\addons\web\session.py", line 104, in send

Server Traceback (most recent call last):
  File "d:\OpenERP 7.0\Server\server\openerp\addons\web\session.py", line 90, in send
  File "d:\OpenERP 7.0\Server\server\.\openerp\netsvc.py", line 293, in dispatch_rpc
  File "d:\OpenERP 7.0\Server\server\.\openerp\service\web_services.py", line 626, in dispatch
  File "d:\OpenERP 7.0\Server\server\.\openerp\osv\osv.py", line 131, in wrapper
  File "d:\OpenERP 7.0\Server\server\.\openerp\osv\osv.py", line 220, in exec_workflow
  File "d:\OpenERP 7.0\Server\server\openerp\addons\audittrail\audittrail.py", line 520, in exec_workflow_cr
  File "d:\OpenERP 7.0\Server\server\.\openerp\osv\osv.py", line 213, in exec_workflow_cr
  File "d:\OpenERP 7.0\Server\server\.\openerp\osv\orm.py", line 3926, in _workflow_signal
  File "d:\OpenERP 7.0\Server\server\.\openerp\workflow\wkf_service.py", line 119, in trg_validate
  File "d:\OpenERP 7.0\Server\server\.\openerp\workflow\instance.py", line 43, in validate
  File "d:\OpenERP 7.0\Server\server\.\openerp\workflow\workitem.py", line 60, in process
  File "d:\OpenERP 7.0\Server\server\.\openerp\workflow\workitem.py", line 175, in _split_test
  File "d:\OpenERP 7.0\Server\server\.\openerp\workflow\workitem.py", line 183, in _join_test
  File "d:\OpenERP 7.0\Server\server\.\openerp\workflow\workitem.py", line 40, in create
  File "d:\OpenERP 7.0\Server\server\.\openerp\workflow\workitem.py", line 52, in process
  File "d:\OpenERP 7.0\Server\server\.\openerp\workflow\workitem.py", line 106, in _execute
  File "d:\OpenERP 7.0\Server\server\.\openerp\workflow\wkf_expr.py", line 67, in execute
  File "d:\OpenERP 7.0\Server\server\.\openerp\workflow\wkf_expr.py", line 57, in _eval_expr
  File "d:\OpenERP 7.0\Server\server\.\openerp\tools\safe_eval.py", line 241, in safe_eval
  File "", line 1, in <module>
  File "d:\OpenERP 7.0\Server\server\.\openerp\osv\orm.py", line 374, in function_proxy
  File "d:\OpenERP 7.0\Server\server\openerp\addons\mgmtsystem_nonconformity\mgmtsystem_nonconformity.py", line 247, in wkf_open
  File "d:\OpenERP 7.0\Server\server\.\openerp\osv\orm.py", line 374, in function_proxy
TypeError: case_open() takes at most 5 arguments (7 given)