Try:
Code:
[V1]
Host = 192.x.x.1
Ports = 63487-65535
Random = True
When you define a device for a specific network card, it's always a good idea to make sure it uses only this network card.
0.0.0.0 means "all NICs", and since the two devices are supposed to use the same ports for passive mode (according to what you've pasted), using it could lead to some conflicts between the two devices.
Let me know if it helps.