Just updated to Fusion 10.0.1 and I'm trying to setup a High Sierra Guest on my Sierra machine. On installation I get an error stating that it's "Unable to create the installation medium".
I recall seeing something similar with Fusion 8 and the Sierra developer previews, but as High Sierra is apparently supported as I guest I'm surprised that I'm getting this error.
How do you install a High Sierra Guest, before I installed a Sierra Guest and then upgraded but surely that should no longer be necessary.