I had to re-install the ST VCP driver to get the COM port back, and immediately lost the HID device from Device Manager so I strongly suspect something bad with their driver.
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
I'll try that in a bit. Any specific build?
I had to re-install the ST VCP driver to get the COM port back, and immediately lost the HID device from Device Manager so I strongly suspect something bad with their driver.