hi , i have an inchworm+ and unicorn usb upgrade module , when i plug the modules ( inchworm+ and unicorn assembled ) or only the unicorn module into the computer's usb connector , windows recognized the module(s) ( i heard a sound , as well as when i unplug the module(s) from the computer ) , it means that the programmer/debugger is recognized by the windows , but the problem is , when i repeat this action several times ( plug and unplug ) , suddenly the content of the pic 18F4550 is corrupted , and i should reprogram the 18F4550 in order to fix this problem ... it seems that i am not the only person who got this problem , how to fix the problem ? ... thanks ...