MySQL Invalid DB

I have been using CI for years and have configured a connection to MySQL X number of times but have been banging my head against a wall for the last 12 hrs.  I am just trying to connect to a MySQL database and am getting an Invalid DB error as soon as my project loads.  I have another project that connects to the same DB working just fine.  I even tried to copy and paste the database config file and the newer version of CI doesn't recognize the file is even there.  Here is what I have:

$active_group = 'default';


$query_builder = TRUE;


$db['default'] = array(
'dsn' => '',
'hostname' => 'localhost',
'username' => 'foxpoint_bdxuser',
'password' => '********',
'database' => 'foxpoint_bdxfeed',
'dbdriver' => 'mysql',
'dbprefix' => '',
'pconnect' => FALSE,
'db_debug' => TRUE,
'cache_on' => FALSE,
'cachedir' => '',
'char_set' => 'utf8',
'dbcollat' => 'utf8_general_ci',
'swap_pre' => '',
'encrypt' => FALSE,
'compress' => FALSE,
'stricton' => FALSE,
'failover' => array(),
'save_queries' => TRUE

);

I do notice that the newer version of CI constructs the DB array a little different but the connection info is the same.  Any ideas?

Try removing dsn. Also try 127.0.0.1 instead of 'localhost'

Try removing dsn. Also try 127.0.0.1 instead of 'localhost'

Thanks CroNiX.  I just figured this out a couple of minutes ago.  Somehow when I copied over the CI files, some of the database driver folders didn't transfer.  Once I moved the MySQL folder over to the database driver folder everything started working as expected.  Not sure how that happed.  Thanks again for your reply.