Its ok...been there done that.....and have learned so much here.

If you know how to look at your database with MySql-Front or another sql program....and see if the table: products_with_attributes_stock was created.
If not there...tables should be alphabetical - you can run the sql through the zencart admin > tools > Install SQL Patches.

Normally I run SQL through MySql-Front but his instructions says you can use this zen admin tool to do it.