You need to delete that hood and try making a clean hood again. The first time I tried I did it wrong, too. I didn't read it carefully enough the first time and I skipped a step, when I reread it and tried again everything worked perfectly and I now have a hood with 30 townies, one of each type of NPC, four downtownies, and two grand vamps in addition to my playables. Read the directions carefully. Notownieregen and antiredundency work, there is clear evidence of this from the many users of this site (including me). Perhaps the tuturial you are using isn't clear, I used this one:
http://www.moreawesomethanyou.com/smf/index.php?PHPSESSID=2e6c484c75aa0a6de1e7fbb0a27191ca&topic=5861.0By the way, Jordi, I am your personal fan girl.