mysql_real_escape_string expects a string and not an array

You're trying to pass an array to the db_escape_string function that begings on line 319 of database.mysql.inc. I'm not sure what you're trying to squeeze from this turnip but I haven't looked at your code. I did however have to patch my drupal file to serialize and deserialize the return value.

Here is the array that it tried to pass as $text to db_escape_string().

Array ( [0] => use referral ) Array ( [0] => administer referral ) Array ( [0] => administer referral ) Array ( [0] => administer site configuration ) Array ( [0] => administer referral ) Array ( [0] => administer referral ) Array ( [0] => administer referral ) Array ( [0] => administer referral )