I had the stepper motor running fine. Disconnected motor to check resistance then reconnected. Did not run and then I tried to ulpoad to board (several times) when I received this error:
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_recv(): programmer is not responding
I have not changed the usb (checked it) tried all of the other trouble shooting suggestion, also quit app and restart computer to no avail.
Any possible resolutions?

