SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6): cannot use database mastero_master
mysql error: Access denied for user 'mastero_master'@'localhost' to database 'mastero_master'
mysql error number: 1044
mysql version: 5.0.91-community
php version: 5.2.14
Date: 05.09.2010 @ 03:08
Script: /wbb2/hmportal.php
Referer: