The line is:
$is_success_second = mysql_query("insert into data (username, password, firstname, lastname, email, age, sex, country, occupation, industry, zip, passquest, passans, income, group, preferences, date) values ('$username', '$password', '$firstname', '$lastname', '$email', '$age', '$sex', '$country', '$occupation', '$industry', '$zip', '$passquest', '$passans', '$income', '$group', '', '$datereg')");
Anyone see it? I'm going cross eyed from a few hours of programming I guess. I can't find it for the life of me. But I am pretty sure it's in this line.