if you are receiving this error it is because you are not logged in as an administrator.
the easiest method of resolving this is to Right Click on the Start Kai icon and select Run as Administrator.
images for reference .. thanx LOTRFAN
http://www.postimage.org/image.php?v=Pq1HjcK9
http://www.postimage.org/image.php?v=gx1FHndr