The update issued about 2 weeks ago from today, 01012016, broke my VM. The update was installed while I was running in Coherence Mode. The system config is a 2009 iMac with Core i7 quad-core, 16GB ram. I was hoping that whatever code that broke my working config would be fixed in the update released the day before yesterday, but no. I need someone in the forum or at Parallels to tell me how to fix this! It was a fully functional Windows 10 Pro VM running in Coherence. Now it doesn't work at all.
Hello JamesD4, Please try reinstalling Parallels tools by following the steps suggested in this link and let us know if it worked.
Since I posted that problem, I started having problems with my OS X install also. I decided to wipe the HDD after creating a bootable El Capitan USB key. Once I had a stable, fresh OS X install, a new Parallels install and Win10 image was possible. It all works and I'm a Happy Guy!
