The Massage say:
Can’t select database
We were able to connect to the database server (which means your username and password is okay) but not able to select the DB_NAME database.
* Are you sure it exists?
* Does the user b17_5310360 have permission to use the DB_NAME database?
* On some systems the name of your database is prefixed with your username, so it would be like username_DB_NAME. Could that be the problem?
If you don't know how to setup a database you should contact your host. If all else fails you may find help at the WordPress Support Forums.
I think this is a big problem. Yes today I install for the first time and it work but i was uploading a new theme and everything was gone. so i setup a new database and a new server and this is coming up. i don't know whats wrong because everything is Right in the "wp-config.php" file. Please help me.