Area of bug: Marketplace.

Bug: Unable to put certain products in my basket.

When I press the button "add to cart", it changes normally to "adding to cart..." Then, I get an error message in a small white box: " undefined". (The product is never sent to the shopping cart)

This has happened with several different items for the last 1-2 weeks. I've tried logging out, clearing cache et cetera.

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[EDIT]

I just found a workaround. If I go to my wishlist and press 'add to cart' from there, it works fine and the product is sent to my shopping cart. Perhaps this information will be useful in locating the error.