Success:
This is the result from the original machine that would not detect the Arduino MEGA2560.
start
{
"eventType": "start",
"message": "OK"
}
list
{
"eventType": "list",
"ports": [
{
"address": "COM5",
"label": "COM5",
"prefs": {
"productId": "0x204B",
"serialNumber": "9533330323135160B071",
"vendorId": "0x03EB"
},
"identificationPrefs": {
"pid": "0x204B",
"vid": "0x03EB"
},
"protocol": "serial",
"protocolLabel": "Serial Port (USB)"
}
]
}
(I hope this is helpful) i replaced the original serial-discovery with this latest one and the Arduino-pro IDE now correctly detects the MEGA2560 board.
It looks to me like this is now resolved.
Please let me know if you need anything else.