Hi, when I want to create a new database in odoo 8, after completing the form and click on "create database" the odoo give following message in detail. please help me to resolve this issue.

update: I found that the error occurs only when I change default Master password from admin to another password.

Traceback (most recent call last):
  File "C:\Program Files\Odoo 8.0-20160118\server\.\openerp\http.py", line 537, in _handle_exception
  File "C:\Program Files\Odoo 8.0-20160118\server\.\openerp\http.py", line 574, in dispatch
  File "C:\Program Files\Odoo 8.0-20160118\server\.\openerp\http.py", line 311, in _call_function
  File "C:\Program Files\Odoo 8.0-20160118\server\.\openerp\http.py", line 803, in __call__
  File "C:\Program Files\Odoo 8.0-20160118\server\.\openerp\http.py", line 403, in response_wrap
  File "C:\Program Files\Odoo 8.0-20160118\server\openerp\addons\web\controllers\main.py", line 703, in create
  File "C:\Program Files\Odoo 8.0-20160118\server\.\openerp\http.py", line 879, in proxy_method
  File "C:\Program Files\Odoo 8.0-20160118\server\.\openerp\http.py", line 115, in dispatch_rpc
  File "C:\Program Files\Odoo 8.0-20160118\server\.\openerp\service\db.py", line 65, in dispatch
  File "C:\Program Files\Odoo 8.0-20160118\server\.\openerp\service\security.py", line 32, in check_super
AccessDenied: Access denied.

Thanks.