Thanks!
You were right!
the missing file was the init_ceon_uri_mapping.php script!

inside includes/init_includes ...

Now I will test with just one cat, subcat, product, to see if it works my feed to Google base.

BTW Your form calls the class everytime you click on the tick URI field?

I am creating a script to call the class, and execute database commands to do that automatically for me ... but I didn't have the time to take a deep look into your add on.
My problem is have over 20,000 products ...