Thank you for the advice to use a data assist known issue library.php file as a replacement.
Online with new file uploaded there is a difference although I've seen this behavior before when testing locally: 'the registration page defaults to log-in then to new password which, carries a generated password onto the left of the page'.
This behavior can be created by simply clicking the page buttons with or with-out entering information. I remember that the configuration of the registration and log-in pages was not a smooth run with differing hitches requiring Webassist forum advice along the way. And that this behavior is most probably a mixed result of OS Vista update what ever, CS4 and WA extension not quite inter-grating. Now, I'd love a fix if you have one for this behavior that I can tweak and re-implement into another site. But, if you think that another attempt to configure will be a better bet I take your advice. The truth is the whole process of dynamic pages utterly fascinates me so I don't mind either way...
Thanks for reading