"No compatible USB Bluetooth 4.0 device found!" error with Espruino Command Line on Windows

Hi Espruino Savants,

I am trying to use the Espruino Command Line module on a Windows 10 PC. I type
"espruino -p COM18" because my ESP8266 module is on COM18 (works fine with the WebIDE) and get a
"No compatible USB Bluetooth 4.0 device found!" error. (Full error output message below.) Did I miss some setting?
Thanks,
Dan

PS C:\Users\dan\Documents\Espruino\code\Espruino> espruino -p COM18
Espruino Command-line Tool 0.1.5
-----------------------------------

Connecting to 'COM18'
C:\Users\dan\AppData\Roaming\npm\node_modules\espruino\node_modules\bluetooth-hci-socket\lib\usb.js:70
    throw new Error('No compatible USB Bluetooth 4.0 device found!');
    ^

Error: No compatible USB Bluetooth 4.0 device found!
    at BluetoothHciSocket.bindUser (C:\Users\dan\AppData\Roaming\npm\node_modules\espruino\node_modules\bluetooth-hci-socket\lib\usb.js:70:11)
    at BluetoothHciSocket.bindRaw (C:\Users\dan\AppData\Roaming\npm\node_modules\espruino\node_modules\bluetooth-hci-socket\lib\usb.js:28:8)
    at Hci.init (C:\Users\dan\AppData\Roaming\npm\node_modules\espruino\node_modules\noble\lib\hci-socket\hci.js:101:35)
    at NobleBindings.init (C:\Users\dan\AppData\Roaming\npm\node_modules\espruino\node_modules\noble\lib\hci-socket\bindings.js:82:13)
    at Noble.<anonymous> (C:\Users\dan\AppData\Roaming\npm\node_modules\espruino\node_modules\noble\lib\noble.js:55:24)
    at _combinedTickCallback (internal/process/next_tick.js:73:7)
    at process._tickCallback (internal/process/next_tick.js:104:9)
    at Module.runMain (module.js:606:11)
    at run (bootstrap_node.js:389:7)
    at startup (bootstrap_node.js:149:9)
PS C:\Users\dan\Documents\Espruino\code\Espruino>