I initially installed Platinum on my Win 7 production system, using the Command Center. I wanted to install it on my backup system that has Win 8.1. I just installed the Command Center on that system and then downloaded and installed everything. I moved my iLok key over to the backup system so I could check out the VST's that use iLok and all seems to be working.
I have one system that has the Windows 10 pre-release on it, I have X3 installed on that, I'm going to install the Command Center and Platinum to see how it runs on Win 10.