the validation is failing, we need to get more details about why.
find this code:
PostResult($WAFV_Redirect,$WAFV_Errors,"registration");
and change it to:
die($WAFV_Errors);
PostResult($WAFV_Redirect,$WAFV_Errors,"registration");
this will wrote a coma separated list of failed validations to the screen, post this back so i can look into what is failing.