I've got about 1000 WD15 docking stations in my environment and I'm in the process of trying to update the firmware on them.   I''m deploying the firmware update with the /s switch and then giving a message to the users to reboot.   

After rebooting and sitting through the upgrade screen, several users have come back saying they get a message along the lines of "multiple docking stations are not simultaneously supported. disconnect additional docking station"  Press F1, F2, F5 etc.

There is only one docking station connected, in at least one case the dock is connected only to power and network so no extra devices are connected either.

I'm trying to find the cause of this and if there is a way to avoid this message and not generate calls to our service desk.