Fatal Error trying to connect to DB

I'm having lots of problems with what seems to be my last step prior to the actual installation of Dolphin 7.0 on BlueHost. I'm at the Permissions Reversal stage of my install. Changed the inc directory from 755 to 644. And now I get this:

Warning: require_once(../inc/classes/BxDolIO.php) [function.require-once]: failed to open stream: Permission denied in /home8/hipsterl/public_html/databell/install/index.php on line 458

Fatal error: require_once() [function.require]: Failed opening required '../inc/classes/BxDolIO.php' (include_path='.:/usr/share/pear:/usr/share/php') in /home8/hipsterl/public_html/databell/install/index.php on line 458

After reading a variety of forum posts, I've tried a couple of suggestions to the BxDolDb.php file. Namely commenting out the:

$this->res ("SET @@local.wait_timeout=9000;");
$this->res ("SET @@local.interactive_timeout=9000;");
$this->res ("SET @@local.c alt=9000;")

And also changing define( 'DB_FULL_DEBUG_MODE', false ); to define( 'DB_FULL_DEBUG_MODE', true ); Neither of these worked so I'm wondering what the actual solution might be.

I also checked the header.inc.php file and this looks good too:

$db['host']                = 'localhost';
$db['sock']                = '';
$db['port']                = '';
$db['user']                = 'Username';
$db['passwd']              = 'Password';
$db['db']                  = 'hipsterl_dolphin';

Which makes sense since i got through the Database stage earlier. So that should work.

So what isn't?

The ./inc directory may have no write permissions, but must retain read and execute permissions at all times. As such, 644 is insufficient, and only 755 and 555 are advised, the latter to be used only if the former fails. If you continue to have issues finding the proper permission value, you may click the "Skip" button, to continue with the installation.

You have now nuked your installation, and must start over, from scratch.

Yep. I switched it to 555 and then once again commented out the three SET @@ areas and now it's installed. Thanks for the help.