There is an issue with LSP v2.5 and the Lynx dongle. In version 2.0, the expresses had no issues - upon upgrade to v2.5, no more response from the Expresses.
I understand by reading through groups on their website and on DIY, that a workaround may exist and I am implementing it now.
From LSP v2.5, go through an Etherdongle(Pixelnet), to a 16-port SS Active Hub and pull DMX from the hub (there is a DMX Out port on the hub) to the Expresses.
I just flashed my Etherdongle with Pixelnet today and finished building an active hub last night - crossing my fingers.