I've no idea what has happened at such long distance; you could try uninstalling in the normal way, then opening the registry editor (regedit) go to the path HKEY_LOCAL_MACHINE\Software\CNC and confirm that folder is deleted. If not, highlight the folder, delete it, reboot, and try installing again. Only edit the registry if sure what you are doing. You do seem to suffer a lot of problems, Alain