I had the same problem and I closed the program unplugged the radio and cable. Then I plugged the cable into a different usb port the started the program again. then it saw the radio and would clone it
Which date daily build are you using? I tried to unplug and tried all the usb ports with no luck.
I'm using the baofeng software, unfortunately CHIRP only supports the uv-b5 in daily builds, still waiting on uv-b6 support.
I picked up a uv-b5 rather than the uv-b6 because I'd rather have he tuning knob than an LED light. Maybe I'll try the baofeng software on my PC at work.