702arts,
Did you check to see what the DB_PREFIX was set to in the wp_config.php file? It should match the new table prefix in the database.
You must allow BetterWPSecurity to have privileges to change the core files; otherwise, you’d need to manually update the wp_config.php files. The default table prefix is “wp_” and would look like this in your wp-config.php file:
/**
* WordPress Database Table prefix.
*
* You can have multiple installations in one database if you give each a unique
* prefix. Only numbers, letters, and underscores please!
*/
$table_prefix = ‘wp_icy’;
You can change the prefix to anything…say “wp_34AxZy_”, and set it to:
$table_prefix = ‘wp_34AxZy_’;
I just set it to allow BetterWPSecurity to modify core files.