Get this error when trying to deliver some goods from stock.

Please help me out...

The full error is:

OpenERP Server Error

Client Traceback (most recent call last):

File "/usr/lib/pymodules/python2.7/openerp/addons/web/http.py", line 204, in dispatch

response["result"] = method(self, **self.params)

File "/usr/lib/pymodules/python2.7/openerp/addons/web/controllers/main.py", line 1132, in call_button

action = self._call_kw(req, model, method, args, {})

File "/usr/lib/pymodules/python2.7/openerp/addons/web/controllers/main.py", line 1120, in _call_kw

return getattr(req.session.model(model), method)(*args, **kwargs)

File "/usr/lib/pymodules/python2.7/openerp/addons/web/session.py", line 42, in proxy

result = self.proxy.execute_kw(self.session._db, self.session._uid, self.session._password, self.model, method, args, kw)

File "/usr/lib/pymodules/python2.7/openerp/addons/web/session.py", line 30, in proxy_method

result = self.session.send(self.service_name, method, *args)

File "/usr/lib/pymodules/python2.7/openerp/addons/web/session.py", line 103, in send

raise xmlrpclib.Fault(openerp.tools.ustr(e), formatted_info)

Server Traceback (most recent call last):

File "/usr/lib/pymodules/python2.7/openerp/addons/web/session.py", line 89, in send

return openerp.netsvc.dispatch_rpc(service_name, method, args)

File "/usr/lib/pymodules/python2.7/openerp/netsvc.py", line 296, in dispatch_rpc

result = ExportService.getService(service_name).dispatch(method, params)

File "/usr/lib/pymodules/python2.7/openerp/service/web_services.py", line 626, in dispatch

res = fn(db, uid, *params)

File "/usr/lib/pymodules/python2.7/openerp/osv/osv.py", line 190, in execute_kw

return self.execute(db, uid, obj, method, *args, **kw or {})

File "/usr/lib/pymodules/python2.7/openerp/osv/osv.py", line 132, in wrapper

return f(self, dbname, *args, **kwargs)

File "/usr/lib/pymodules/python2.7/openerp/osv/osv.py", line 199, in execute

res = self.execute_cr(cr, uid, obj, method, *args, **kw)

File "/usr/lib/pymodules/python2.7/openerp/osv/osv.py", line 187, in execute_cr

return getattr(object, method)(cr, uid, *args, **kw)

File "/usr/lib/pymodules/python2.7/openerp/addons/stock/wizard/stock_partial_picking.py", line 214, in do_partial

stock_picking.do_partial(cr, uid, [partial.picking_id.id], partial_data, context=context)

File "/usr/lib/pymodules/python2.7/openerp/addons/stock/stock.py", line 1370, in do_partial

self.action_move(cr, uid, [pick.id], context=context)

File "/usr/lib/pymodules/python2.7/openerp/addons/stock/stock.py", line 909, in action_move

context=context)

File "/usr/lib/pymodules/python2.7/openerp/addons/product_serial_mandatory/stock.py", line 36, in action_done

return super(stock_move, self).action_done(cr, uid, ids, context=context)

File "/usr/lib/pymodules/python2.7/openerp/addons/product_serial/stock.py", line 111, in action_done

result = super(stock_move, self).action_done(cr, uid, ids, context)

File "/usr/lib/pymodules/python2.7/openerp/addons/stock/stock.py", line 2437, in action_done

wf_service.trg_write(uid, 'stock.picking', pick_id, cr)

File "/usr/lib/pymodules/python2.7/openerp/workflow/wkf_service.py", line 55, in trg_write

instance.update(cr, id, ident)

File "/usr/lib/pymodules/python2.7/openerp/workflow/instance.py", line 52, in update

workitem.process(cr, witem, ident, stack=stack)

File "/usr/lib/pymodules/python2.7/openerp/workflow/workitem.py", line 60, in process

ok = _split_test(cr, workitem, activity['split_mode'], ident, signal, stack)

File "/usr/lib/pymodules/python2.7/openerp/workflow/workitem.py", line 157, in _split_test

if wkf_expr.check(cr, workitem, ident, transition,signal):

File "/usr/lib/pymodules/python2.7/openerp/workflow/wkf_expr.py", line 80, in check

return _eval_expr(cr, ident, workitem, transition['condition'])

File "/usr/lib/pymodules/python2.7/openerp/workflow/wkf_expr.py", line 57, in _eval_expr

ret = eval(line, env, nocopy=True)

File "/usr/lib/pymodules/python2.7/openerp/tools/safe_eval.py", line 285, in safe_eval

return eval(test_expr(expr, _SAFE_OPCODES, mode=mode), globals_dict, locals_dict)

File "", line 1, in <module>

NameError: name 'test_serial' is not defined