Martyn, thanks for your reply. By experiment I have found that closing down Labview and restarting it solves the problem reliably but unplugging the USB connection does not. There was nothing obvious in the event viewer. Seems like Labview holds onto the usb port until either it gets a specific inst...

I am writing Labview code for a Picoscope 4227. Inevitably some changes result in failures which means the code stops before the 4227 gets a close command. I find that getting the 4227 to a state when the next time the program runs the open command works is really problematic. Sometimes just unplugg...