I get error "Could not open /dev/vmmon: No such file or directory.. Please make sure that the kernel module `vmmon' is loaded." for all my virtual machines for VMWare Fusion 8.5.8 after upgrading to Mac OS High Sierra. I have uninstalled, cleared Library files, checked permissions and reinstalled several times with no change in error.
Nothing in the archives, even for the same error for Fusion 5, indicate a solution other than the steps I've already tried, including deleting VirtualBox and Oracles Java Library entries.