I have the Easy Checkout Mod and EZ Upsell and love them.
But my very first customer couldn't add 2 products to her cart. She added about 8 others successfully.
The products she had trouble with are here :
http://www.ozquilts.com.au/xcart/product.php?productid=16802&cat=0&page=1
and here
http://www.ozquilts.com.au/xcart/product.php?productid=16812&cat=0&page=1
They are in stock, available for sale, I can add them thru AOM - but can't add them to the checkout from the customer side.
I am not sure what theproblem is.
4.0.13