I upgraded to the latest beta and it's impossible to start a virtual machine. I tried uninstalling Parallels, rebooting, reinstalling. Did that several times, but the same problem still persists. I also have 10GB of space free on my HD. This is the problem: "Unable to allocate virtual machine memory! This error may occur mostly if there is no enough free disk space available on the physical disk to allocate virtual machine paging file. Try to clean up the physical disk (remove unnecessary files). If it doesn't help, try to re-install Parallels Desktop." Anyone has an idea how to resolve this?