Parallels doesn't work after OS update

Just installed Mavericks 10.9.2 and now I can't open any Windows software using Parallels. I get an error message that says "Your virtual machine may run slow because virtualization support is disabled on your Mac." The i get another one that says " Unable to load the Parallels driver." I've followed the links to the Parallels support site and followed all the instructions including uninstalling and reinstalling Parallels and Windows to no avail. None of the offered solutions addresses how to enable virtualization on the Mac.

Any thoughts?