I just installed the demo of your product and got it up and running in no time. I searched high and low for a decent login script and thank God I found yours.
FileChucker is working great... Clients love it. Vendors love it. We love it.
Do you know how rare it is to have a "canned" shopping cart with the ability to fairly easily do complex pricing options on a single item? Maybe you do, but if you don't... basically, they don't exist! I have looked. Everywhere! And the few that might even come close to the functionality that you have in CornerStore cost a fortune!