Thank you for the awesome plugin. I have setup my main store as and one other store in the network.
I upgraded to the latest version of MarketPress hoping it would solve my problem but it did not.
When adding a product to the "other" store in the network there is no problem adding/editing the quantity of stock available or adding/editing a sale price, however this is a problem in my main blog because those option are grey out all of a sudden. Do you perhaps know how I could get it to work properly?