(1) It has never been possible to backup (Save A Copy) from any version of Generations directly to a CD (unless you are using CD-RW disks that may work, but most likely may not). You need to Save A Copy to your hard drive, and then use your normal CD burning software to burn the copy to CD.
(2) If you buy a Mac that also runs Windows, then Generations may work. I do not know anyone that has tried. A better but more expensive solution is to buy Reunion for the Mac (which we also supply) which is the Mac version of Generations. Reunion for the Mac is being continuously developed and is now more up to date than Generations.