Blank / white screen for admin/utils/
That error is a bug in Craft that's been fixed for the next release.  That line is PHP 5.4 array syntax and your server is still using PHP 5.3 (Craft still supports back to PHP 5.3).

In the meantime, you can go to the line it's complaining about and change:

$serverArray = [];


to:

$serverArray = array();