youtube code error

[Tile Mural Store UK]

Getting the following error in zencart v155f when trying to insert a new product
WARNING: An Error occurred, please refresh the page and try again.
log file
PHP Fatal error: 1054:Unknown column 'products_youtube' in 'field list' :: insert into products

[Tile Mural Store UK]

sorted
ALTER TABLE products ADD products_youtube tinyint(1) default '0' NOT NULL;