it looks like validation is failing.
Find the following code:
if ($WAFV_Errors != "") {
PostResult($WAFV_Redirect,$WAFV_Errors,"usersRegistration");
}
and change it to:
if ($WAFV_Errors != "") {
PostResult($WAFV_Redirect,$WAFV_Errors,"usersRegistration");
}
this will werite a coma separated list of the failed validations to the screen, please posst this back along with a copy of your page./