I've had a few of these over the years
One springs to me mind where my then boss emailed me telling me to install the Exchange 2010* Management Console onto a couple of Citrix servers
Then tried to blame me for not uninstalling the Exchange 5.5 management console from them.
Because I should have somehow known...
Of course I pointed out his failure to instruct != to my perceived failure to act and since the two consoles can be present on the same machine to manage both environments, how was I supposed to assume?
I can imagine the screaming if I'd taken it off without being told to find it was still needed.
*Might have been 2007. Was a good few years ago now.