Re: Unable to open file ".../Boot Camp.vmwarevm/Boot Camp.vmdk": The system cannot find the file specified

Voilá - today I had to install macOS 10.13.6 security update, and also updated to Fusion 11.5, and Boot Camp did not start again. :-(

Edited the vmdk and reverted back to disk0s1 and disk0s3 and everything works again.

Amazing - not.