Sorry for the delay in replying. Last week I tried using Cura and couldn't get past the first run setup, took it over to a friend who is more electronically inclined than me and it worked, no change in what I was doing. I take it back to my house and it doesn't work, again, no change. I ignore it for a week and try again, and it works, no change in what I did. If it is a physical problem, my guess is something's wrong with one of the wires, or the USB cable. However, I'm betting it's just the software.