I just got my Autodesk Inventor 2012 update on a really nice 16Gb usb key. Conveniently I just lost the key I carry so this would make an excellent replacement. The only problem is that it is write ...
the new entry afterwards and change the value from 0 to 1. A value of 1 disables writing to all connected USB devices. If you want to enable writing again you need to change the value of the key to 0.