[Mesh] Trouble with meraki board

Hey everyone! I've been trying to set up the Meraki Sparky board to flash the openwrt code to it, but when I connect the pins and plug in the usb adapter to my laptop and run the meraki-flasher script, I get this exception "SerialException('device reports readiness to read but returned no data (device disconnected?)')" and the green led on the meraki board isn't lit. But $ dmesg | grep tty shows that it's connected. Does anyone have any ideas as to good way to pinpoint what the issue may be? Not sure if the issue is the usb adapter I'm using or the board itself, but I was going to try buying another usb to ttl adapter tomorrow to see if that helps. Any advice would be awesome! It was nice meeting you all tonight! Daphne