Ok, you lost me a little. Are you referring to the session name? On the Users Registration form page the name & id of the form is WAATKRegistrationForm and the session name is WAVT_usersRegistration_Errors and the file name of the form page is users_Registration.php
I'm getting confused because there is an "_" in the page file name and yet this page works great. It keeps the form filled as it should.
On my form I do have all of the names changed to match my form name and page. My form name and id is vendorsform, the session is $_SESSION['WAVT_vendorsform_Errors'] = "";
and the file name of the page is vendorsform.php.
Which part of the above are you referring to?