So many questions on it. So here's a little guide on how to make it work. For vista users do the following: Run the setup file for libusb as admin and in XP compatibility mode. To run in compatibility mode do the following: Right click the libusb setup file and click: Properties Then goto the Compatibility tab. Then check the little box that says run the program in compatibility mode for: Then there will be a drop down box, select windows xp. If your guy's problem's still happen, let me know.