Error Number: 1364 occurs most probably due to default not set or null value not allowed.
Change the salt field from "NOT NULL" to "ALLOW NULL".
ALTER TABLE users MODIFY salt varchar(40) null;
This should reset it's default to "ALLOW NULL", allowing you to insert a record without a value for salt field
If salt is used ,
$config['store_salt'] = TRUE;
It will change your password encryption algorithm, default password, 'password', changes to fbaa5e216d163a02ae630ab1a43372635dd374c0 with default salt.