Ok, maybe I am just being blind, stupid, or both but when I try to run this I do not see any instructions and all I get at the top of the page is:

Google Merchant Center Feeder
Feed Type: Products
SQL Query Limit ##########___
SQL Query Offset ##########__

I have tried to play around with the SQL Query things by placing random numbers in it or leaving it blank.

All this mod does so far when I click the confirm button is open a new window that stays blank and that is it, doesnt create anything.