Ah sorry, i forgot to reply here.
I did manage to get the form working after some hours of digging around, by adding an Email field to the registration form. The site didn’t need an email field in the form, but i had to add it for the form to submit.
I am perplexed as to why i have to have both Email & Password fields on the registration form, even when not needed, but that was the only way for the form to submit properly through time.
Thanks for the reply though ??