Hi,
My old prestashop version is 1.4.6.2 and I've installed 1.5.0.17 into a subdirectory 'prestashop'.
Everything works but Add to cart not works!
I test it In any browser with both default and custome theme.
Add to cart button does not show any effect and cart block does not change.
But after clicking on Shopping Cart and going to order page it is updated!
Any ideas will be helpful...