products saying page not found

on 1 of the sub sites of my site even though there are products added and they show up on the products page
when you actually click on any of the products, then all i get is

Not Found
Sorry we could not find that page.

i have checked the slugs and everything works up to the point of the actual product

/store/ works
/store/products/ works
/store/products/moss-agate/ does not work

i go into products, click on quick edit and it does show the product slug as moss-agate

i do a regular edit and it shows:


its likely something to do with the fact that the categories also are not working right

does not work neither
on the main store page the category link shows the category in the list as well. so it should be valid.

any idea what would cause this?