Do this. DVD43 is free, right(?) ... so you can always download it and reinstall ... so uninstall DVD43. Uninstall CloneDVD. Uninstall AnyDVD.
Both Clone and Any have their own uninstall routines under Start/Programs/Elby and Slysoft/Uninstall ... i.e. don't use Windows Add/Remove programs. When the uninstall programs ask you something like "do you want to remove all registry entries for (Any or Clone)" Yes or No ... click YES. (be sure you have saved the keys for both programs to a floppy disk or other media). When ever prompted to reboot, do it ... don't cheat.
If 43 has it's own uninstall, use that rather than "add/remove"
Reboot once more. Now install Clone and Any following all rebooting prompts. Reapply the keys for both programs. Can't remember if you are prompted to reboot after appying keys ...
Try it now ... you know the drill ... fingers crossed me!