my problem is that i download the code through usb debugger and run through debugger and i got the output.next time i tried to download the anther code ,at that time usb debugger is not conneting and give error msg that check the connection option.before connetion throug IDE usb section in connection option shows some number after pressing connection button in IDE this number is not presant in the usb section and also IDE get hanged and at the end gives error msg connection error