I have a KVM Pro Corporate license. I get the error when I enter the license, or try the account login to enable this. I used it before with my license, it is just now not working for some reason.
The corp license is only relevant if it has multiple concurrent activations on it (purchased) - which yours do not. What you do have, and why it may have worked in the past, is 2 licenses under your account.
For this to work (again), you would have the one Primary activated, then use the other license to activate for the function you are wanting.
Sean Drohan
Stardock Support Manager