Success - now at v10.1.6.
One wrinkle, the final command needed to be run as root, because without it I got:
"The effective user ID is not root."
sudo (the command) resulted in what I assume is the correct output:
$ sudo /Applications/VMware\ Fusion.app/Contents/Library/vmware-id /Applications/VMware\ Fusion.app/Contents/Library/Initialize\ VMware\ Fusion.tool set
*** Setting file permissions...
*** Creating directory /Applications/VMware Fusion.app/Contents/Public/Templates...
*** Setting permissions on /Applications/VMware Fusion.app/Contents/Public/Templates...
The one remaining issue is that attempting to install VMWare tools results in:
"VMWare Fusion needs to download the following component:
VMWare Tools for legacy linux"
...the client OSes I'm running are RedHat 7.3 and CentOS 4.9.
I guess I could live without the tools, but if there's a way to nail this last item down I'd be grateful for pointers.
Many thanks for the help!