When I try to confirm invoice odoo return me this error : 

Traceback
(most recent call last):
  File "C:\Program Files\Odoo
8.0-20150209\server\.\openerp\http.py", line 530, in _handle_exception
  File "C:\Program Files\Odoo
8.0-20150209\server\.\openerp\http.py", line 567, in dispatch
  File "C:\Program Files\Odoo
8.0-20150209\server\.\openerp\http.py", line 303, in _call_function
  File "C:\Program Files\Odoo
8.0-20150209\server\.\openerp\service\model.py", line 113, in wrapper
  File "C:\Program Files\Odoo
8.0-20150209\server\.\openerp\http.py", line 300, in checked_call
  File "C:\Program Files\Odoo
8.0-20150209\server\.\openerp\http.py", line 796, in __call__
  File "C:\Program Files\Odoo
8.0-20150209\server\.\openerp\http.py", line 396, in response_wrap
  File "C:\Program Files\Odoo
8.0-20150209\server\openerp\addons\web\controllers\main.py", line 960, in
exec_workflow
  File "C:\Program Files\Odoo
8.0-20150209\server\.\openerp\http.py", line 1101, in exec_workflow
  File "C:\Program Files\Odoo
8.0-20150209\server\.\openerp\http.py", line 872, in proxy_method
  File "C:\Program Files\Odoo
8.0-20150209\server\.\openerp\http.py", line 114, in dispatch_rpc
  File "C:\Program Files\Odoo
8.0-20150209\server\.\openerp\service\model.py", line 37, in dispatch
  File "C:\Program Files\Odoo 8.0-20150209\server\.\openerp\service\model.py",
line 113, in wrapper
  File "C:\Program Files\Odoo
8.0-20150209\server\.\openerp\service\model.py", line 183, in
exec_workflow
  File "C:\Program Files\Odoo
8.0-20150209\server\.\openerp\service\model.py", line 177, in
exec_workflow_cr
  File "C:\Program Files\Odoo
8.0-20150209\server\.\openerp\service\model.py", line 159, in execute_cr
  File "C:\Program Files\Odoo
8.0-20150209\server\.\openerp\api.py", line 241, in wrapper
  File "C:\Program Files\Odoo 8.0-20150209\server\.\openerp\models.py",
line 3509, in signal_workflow
  File "C:\Program Files\Odoo
8.0-20150209\server\.\openerp\workflow\__init__.py", line 85, in
trg_validate
  File "C:\Program Files\Odoo
8.0-20150209\server\.\openerp\workflow\service.py", line 91, in validate
  File "C:\Program Files\Odoo
8.0-20150209\server\.\openerp\workflow\instance.py", line 75, in validate
  File "C:\Program Files\Odoo
8.0-20150209\server\.\openerp\workflow\workitem.py", line 120, in process
  File "C:\Program Files\Odoo
8.0-20150209\server\.\openerp\workflow\workitem.py", line 248, in
_split_test
  File "C:\Program Files\Odoo
8.0-20150209\server\.\openerp\workflow\workitem.py", line 257, in
_join_test
  File "C:\Program Files\Odoo
8.0-20150209\server\.\openerp\workflow\workitem.py", line 95, in create
  File "C:\Program Files\Odoo
8.0-20150209\server\.\openerp\workflow\workitem.py", line 116, in process
  File "C:\Program Files\Odoo
8.0-20150209\server\.\openerp\workflow\workitem.py", line 162, in _execute
  File "C:\Program Files\Odoo
8.0-20150209\server\.\openerp\workflow\workitem.py", line 313, in
wkf_expr_execute
  File "C:\Program Files\Odoo
8.0-20150209\server\.\openerp\workflow\workitem.py", line 291, in
wkf_expr_eval_expr
  File "C:\Program Files\Odoo
8.0-20150209\server\.\openerp\tools\safe_eval.py", line 314, in safe_eval
  File "", line 1, in <module>
  File "C:\Program Files\Odoo
8.0-20150209\server\.\openerp\api.py", line 239, in wrapper
  File "C:\Program Files\Odoo 8.0-20150209\server\openerp\addons\account\account_invoice.py",
line 919, in action_move_create
  File "C:\Program Files\Odoo
8.0-20150209\server\.\openerp\api.py", line 239, in wrapper
  File "C:\Program Files\Odoo
8.0-20150209\server\.\openerp\api.py", line 462, in new_api
  File "C:\Program Files\Odoo
8.0-20150209\server\openerp\addons\account\account.py", line 1404, in
create
  File "C:\Program Files\Odoo
8.0-20150209\server\.\openerp\api.py", line 241, in wrapper
  File "C:\Program Files\Odoo 8.0-20150209\server\.\openerp\api.py",
line 336, in old_api
  File "C:\Program Files\Odoo
8.0-20150209\server\.\openerp\models.py", line 4025, in create
  File "C:\Program Files\Odoo
8.0-20150209\server\.\openerp\api.py", line 239, in wrapper
  File "C:\Program Files\Odoo
8.0-20150209\server\.\openerp\api.py", line 462, in new_api
  File "C:\Program Files\Odoo
8.0-20150209\server\.\openerp\models.py", line 4210, in _create
  File "C:\Program Files\Odoo
8.0-20150209\server\.\openerp\osv\fields.py", line 747, in set
  File "C:\Program Files\Odoo
8.0-20150209\server\.\openerp\api.py", line 241, in wrapper
  File "C:\Program Files\Odoo
8.0-20150209\server\openerp\addons\account\account_move_line.py", line
1421, in create
ValueError:
"'Environment' object has no attribute 'recompute'" while evaluating
u'action_move_create()'