Hi! We didn't notice this until today. Not sure if it was a problem before beta 4, might have been and we just didn't see it.
Products with 10 or more in stock can only be added once to cart, then it says Sold Out. Refresh the page and it's still there (button says add to cart) but if you haven't emptied the cart it the popup says its to low in stock, 0 left.
I'm thinking the functions that check stock somehow only reads the first digit. I'm going to try changing a product to 20-something to see if it thinks there's 2 in stock...
Ah! Now it works... and i changed it back down to 11 and it still works. So maybe they will all work again if i edit the stock level on every product with more then 10 in stock? ;-p
Still, it would be awesome if you can figure out the problem so it wont happen again. Neither me or my client (or other MP users) will be happy editing stocks on hundreds of items.
Any other info you might need?