ExpandHave you added the new fields into database? Check post below how to do it:
https://www.prestashop.com/forums/topic/288826-solved-installdb-not-created-in-database/
Hi, yes I did.
But I did using ALTER TABLE queries and they are working fine.
I managed to solve the problem by also creating the columns also in ps_product_shop table!
I don't know why it was required though.
I was developing in PS 1.6.1.9
Br, John