Basically same thing.
Clean out of the box mini running OS X 10.13. Installed VMWare and got the:
System Extension Blocked
A program tried to load new system extension(s) signed by VMware, Inc.. If you want to enable these extensions, open Security & Privacy System Preferences.
Which is documented here as KB 2151770:https://kb.vmware.com/s/article/2151770
Following those instructions did not help at all. No matter how many times I clicked the allow button nothing happened. I tried deleting and re-installing as well. This did not solve the problem.
The only way I was able to get it to work was booting into recovery mode, launching the terminal, execute the command "csrutil disable" and rebooting.
Once I did that, I was able to launch the Windows 10 Virtual Machine which started installing Windows 10.