Yes - this is known and is due to a chicken and egg problem when upgrading.
7.2 has a new Ethernet driver model, so cannot talk to the previous Ethernet firmware in the DisplayLink device. This means when DisplayLink 7.2 software is installed, and the Ethernet driver is installed it fails to talk to the Ethernet in our chip. This is shown as the error in Windows.
However a few seconds later, the DisplayLink service starts running and the first thing it does is update the firmware in the DisplayLink chip to match the host software version. At this point the Ethernet firmware is updated, and our chip is rebooted (disconnects and reconnects to the USB bus) and now the new Ethernet driver can successfully talk to the device.
I guess that is a long way of saying that although Ethernet shows in error - it is not something to worry about and Ethernet should work correctly after upgrade.
Wim
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