smanders
Hi,
I guess that you're mentioning DT Register component, right?
I can't access your site now. May I know how did you update this component?
Pls take a backup of your site > download latest version 4.0.5 and install it into your site. Or you can clone your live site to a staging / test site and update there first, check if everything goes fine, then apply to the live site. It'll be better.