`Add to cart` and `modify cart` function not working

[yime]

Hello, I recently installed oscommerce but I've encountered a slight problem.

 

When viewing a product's page, I am unable to add the product to cart. An example of this is found here http://www.donksonology.com/store/product_...&products_id=29

 

I am, however, able to use the `buy now` function at a category subpage. An example of this is here: http://www.donksonology.com/store/index.php?cPath=3_21

 

Also, when I add products to the cart using the `buy now` function, I am unable to remove them from the cart or modify the quantity of the products I want to order.

 

Cookies are enabled and I'm at a total loss for what's causing this problem. Any help would be greatly appreciated.

[Guest]

I don't see this problem here, your cart seems ok adding/removing items. Is it happening after you login?

[yime]

I fixed it, there was a problem with config.php. Thank you.