The registration DOES NOT WORK. I had the same experience as most of the posters here – I had an earlier version of Sketch Drawer installed, uninstalled it (which maybe I shouldn’t have done) and then installed the new version. It gives me the message that a license already exists. So this shareware IS NOT WORKING for many people. We need a new key or some way of fixing this. There are enough complaints here to show this is a real problem.