Using VMware Fusion on Yosemite, how can I prevent crashes with sleep wake failure?
Solution 1:
After talking to VMware support, there are two possible solutions to this problem:
Open your Mac's system preferences, go to Energy Saver and disable the option "Put hard disks to sleep when possible". With that option deactivated, I had no sleep wake failures.
Pause or suspend your virtual machines prior to sending your Mac to sleep.
Solution 2:
I have this problem everytime I upgrade the OS. By turning off app nap for the entire Mac I was able to resolve the issue on Yosemite. See the link below.
http://osxdaily.com/2014/05/13/disable-app-nap-mac-os-x/