Posted to drupal.org project page as well:

I have uc_wishlist installed in Drupal 6.x and UC 2.x. It's allowing me to create the wish list but when I login as a user, search for a wish list and then add one of that wish list's products to my cart I get the following errors:

* You have selected to purchase more items than requested.
* You have selected to purchase more items than requested.

Any suggestions? It's not adding to the cart and I do have a quantity set on the wishlist side. So I've added a quantity of 1 or more to the # of product I would like. But then logged in as a diff user and then trying to add that product it doesn't work per above.

-backdrifting