VMWare Fusion 5: Could Not Open /dev/vmmon: No Such File or Directory.
I ran into this issue recently with VMWare Fusion 5. All of the sudden none of my virtual machines would start. They would all error out with “Could not open /dev/vmmon: No such file or directory.”
After much head banging I remembered that I had recently installed Intel HAXM. Taking a stab in the dark I uninstalled HAXM:
Voila! All of my VM’s happily start. My emulators run extremely slow, but at least I can run virtual machines. Will update if I figure out how to get them running in parallel.