I'm getting blank pages

Is your error reporting on? It sounds like you're getting a PHP error that is fatal and you aren't reporting errors. Also, if you know where to find them, look in your apache error_log.

Common causes of blank pages are:

• insuffient memory for PHP (should be at least 24M — see http://drupal.org/node/29268 and more information for changing PHP settings ).

• directories not writable

• PHP script error, such as trying to include a file which is not present

• path to CiviCRM files is not being set properly. Check and recheck civicrm.settings.php, particularly the section

    global $civicrm_root;
    $civicrm_root = '';
    define( 'CIVICRM_TEMPLATE_COMPILEDIR', '' );
    define( 'CIVICRM_UPLOADDIR'          , ''  );
    define( 'CIVICRM_IMAGE_UPLOADDIR'    , '');
    define( 'CIVICRM_CUSTOM_FILE_UPLOADDIR'    , '' );
  

  Compare the paths you typed to those given in the comments.